8926
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 13392
- Proper Divisor Sum (Aliquot Sum)
- 4466
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4462
- Möbius Function
- 1
- Radical
- 8926
- Omega Function (Ω)
- 2
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 47
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- Squarefree Number
- yes
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- a(n) = floor( n*(n-1)*(n-2)/23 ).at n=60A011905
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 94.at n=7A031592
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 72 ones.at n=5A031840
- Number of step shifted (decimated) sequences using exactly two different symbols.at n=15A056376
- Centered 15-gonal numbers: a(n) = (15*n^2 - 15*n + 2)/2.at n=34A069128
- Indices of triple-safe primes: p=prime(n) is double-safe: q=(p-1)/2, r=(q-1)/2 and s=(r-1)/2 are all prime (and q is double-safe).at n=12A075134
- Average of 4 primes where the integer Schwarzian derivative is zero.at n=9A094903
- Number of distinct angles in all integer-sided triangles with all sides <= n.at n=37A123325
- Position of cubes in the EKG sequence (A064413).at n=20A140418
- Adjusted recursive triangular sequence with row sums 2*(n+5)!/6!: A(n,k)= A(n - 1, k - 1) + A(n - 1, k) + (n + 4)*(n + 3)*A(n - 2, k - 1).at n=12A153738
- Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.at n=2A205746
- Number of (n+1)X4 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.at n=2A205748
- T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.at n=12A205753
- Number of 4X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.at n=2A205755
- Minimum even value unattainable as the sum of 5 attained values of i*(i-1) with i in 0..n.at n=45A225291
- Number of condensed integer partitions of n.at n=49A239312
- Number of length n+5 0..1 arrays with no three disjoint pairs in any consecutive six terms having the same sum.at n=14A248441
- Number of (n+1)X(n+1) 0..1 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.at n=8A251121
- Numbers k such that k^2 and k^3, when reversed, are prime.at n=39A320909
- Sum of the second largest parts of the partitions of n into 8 squarefree parts.at n=44A326451