9244
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 16184
- Proper Divisor Sum (Aliquot Sum)
- 6940
- 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
- 4620
- Möbius Function
- 0
- Radical
- 4622
- Omega Function (Ω)
- 3
- 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
- 153
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- Number of compositions of n into 4 ordered relatively prime parts.at n=38A000742
- 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 48.at n=38A031546
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 80 ones.at n=0A031848
- Values of A038007 not ending in 6 or 8.at n=14A038009
- Numbers whose base-5 representation contains exactly two 3's and three 4's.at n=25A045303
- a(n) = (117*n^2 - 99*n + 2)/2.at n=13A050408
- Number of primes less than 10^n containing only the digits 2 and 3 (A020458).at n=16A069749
- a(n) = 6*n^2 + 3*n + 1.at n=39A085473
- a(n) = (27*n^2 + 9*n + 2)/2.at n=26A093485
- a(n) = 4*a(n-1)-4*a(n-3)-a(n-4).at n=7A107382
- Numbers k such that sigma(k) plus the k-th prime is a triangular number.at n=28A115907
- Number of incongruent restricted disjoint covering systems (IRDCS) of length n.at n=31A123298
- a(n) = 5*n^2 - 1.at n=42A134538
- Indices in A146326 where records occur.at n=40A146345
- Partial sums of floor(n^3/2).at n=16A173704
- Numbers k such that 12321*2^k + 1 is prime.at n=25A180924
- Number T(n,k) of standard Young tableaux of n cells and height >= k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=58A182222
- a(n) = 4*(5*n^2 - 5*n + 1).at n=21A193448
- Numbers n such that 9^n + 8 is prime.at n=13A217385
- Number of standard Young tableaux of n cells and height >= 3.at n=7A218263