4455
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 20
- Divisor Sum
- 8712
- Proper Divisor Sum (Aliquot Sum)
- 4257
- 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
- 2160
- Möbius Function
- 0
- Radical
- 165
- Omega Function (Ω)
- 6
- Little Omega Function (ω)
- 3
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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 95
- 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
- no
- Odd
- yes
Appears in sequences
- Degrees of irreducible representations of alternating group A_12.at n=40A003867
- Degrees of irreducible representations of symmetric group S_12.at n=71A003876
- Degrees of irreducible representations of symmetric group S_12.at n=70A003876
- Quadrinomial coefficients.at n=8A005720
- Alkane (or paraffin) numbers l(7,n).at n=19A005994
- Number of partitions of n into Fibonacci parts (with 2 types of 1).at n=31A007000
- Coordination sequence T3 for Zeolite Code CAS.at n=40A008065
- Exponential convolution of primes with themselves (divided by 2).at n=7A014346
- Odd numbers k that divide phi(k)*sigma(k).at n=11A015706
- Values of n where (phi(n) * sigma(n))/n is an integer and increases.at n=48A015707
- a(n) = (n+1)*binomial(n+4, 4).at n=8A027800
- a(n) = 165*(n+1)*binomial(n+4,11)/4.at n=1A027807
- Congruence classes of triangles which can be drawn using lattice points in n X n grid as vertices.at n=12A028419
- "BIK" (reversible, indistinct, unlabeled) transform of 1,3,5,7...at n=8A032127
- Second 10-gonal (or decagonal) numbers: n*(4*n+3).at n=33A033954
- Expansion of 1/(1-3*x)^9; 9-fold convolution of A000244 (powers of 3).at n=3A036222
- Odd numbers m such that there exists an even number k < m with phi(k) = phi(m).at n=43A036798
- Triangle whose (i,j)-th entry is binomial(i,j)*3^(i-j)*11^j.at n=16A038229
- Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*3^j.at n=19A038317
- Coordination sequence T2 for Zeolite Code SFF.at n=44A038438