4388
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 7686
- Proper Divisor Sum (Aliquot Sum)
- 3298
- 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
- 2192
- Möbius Function
- 0
- Radical
- 2194
- 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
- 139
- 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
- Schoenheim bound L_1(n,n-4,n-5).at n=22A036830
- Number of partitions satisfying 0 < cn(1,5) + cn(4,5).at n=29A039898
- Numbers having three 4's in base 8.at n=28A043439
- Numbers whose base-4 representation has exactly 7 runs.at n=12A043598
- Numbers k such that number of runs in the base 4 representation of k is congruent to 1 mod 6.at n=30A043838
- Numbers n such that number of runs in the base 4 representation of n is congruent to 0 mod 7.at n=12A043843
- Numbers n such that number of runs in the base 4 representation of n is congruent to 7 mod 8.at n=12A043857
- Numbers n such that number of runs in the base 4 representation of n is congruent to 7 mod 9.at n=12A043865
- Numbers k such that the number of runs in the base-4 representation of k is congruent to 7 (mod 10).at n=12A043874
- Numbers k > 1 such that, in base 3, k and k^2 contain the same digits in the same proportion.at n=37A061657
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 81 ).at n=23A063354
- Numbers n such that |A053222(n)| = tau(n).at n=9A064431
- Arithmetic derivative of Fibonacci numbers > 0.at n=19A068329
- Coefficient of x^2 in the n-th Moebius polynomial (A074586), M(n,x), which satisfies M(n,-1)=mu(n) the Moebius function of n.at n=42A077598
- A014486-indices of binary trees whose left and right subtree are identical.at n=12A083938
- a(n) = floor(6^n/5^n).at n=46A094983
- Number of distinct values of i*j + j*k + k*i with 1 <= i <= j <= k <= n.at n=45A100440
- Number of partitions of n which represent first player winning Chomp positions.at n=29A112471
- Numbers that are the least element of a k-cycle (k > 1) of permutation A114650.at n=49A114727
- This sequence needs a meaningful name.at n=14A121794