4435
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5328
- Proper Divisor Sum (Aliquot Sum)
- 893
- 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
- 3544
- Möbius Function
- 1
- Radical
- 4435
- 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
- 77
- 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
- no
- Odd
- yes
Appears in sequences
- Number of graphs with n nodes and n-3 edges.at n=12A001431
- Coordination sequence T1 for Zeolite Code VET.at n=41A009902
- Every suffix prime and no 0 digits in base 6 (written in base 6).at n=38A024781
- 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 13.at n=36A031511
- Number of bracelets (turnover necklaces) of n beads of 4 colors.at n=7A032275
- Number of partitions in parts not of the form 9k, 9k+1 or 9k-1. Also number of partitions with no part of size 1 and differences between parts at distance 3 are greater than 1.at n=43A035940
- Numbers whose base-4 representation contains exactly two 0's and four 1's.at n=29A045027
- Numbers whose base-5 representation contains exactly two 0's and three 2's.at n=12A045183
- Number of ways to color the vertices of an octagon using <= n colors, allowing rotations and reflections.at n=4A060560
- Next-to-middle coefficient in expansion of Product_{k=1..n} (1 + x^k).at n=17A068202
- a(n)=sum(k=1,n,C(n,n reduced (mod k))).at n=12A072953
- Positions of check bits in code in A075931.at n=43A075933
- Triangle T(n,k) read by rows, giving number of bracelets (turnover necklaces) with n beads of k colors (n >= 1, 1 <= k <= n).at n=31A081720
- Starting positions of strings of three 6's in the decimal expansion of Pi.at n=3A083625
- Number of generations needed to reach an oscillator, starting with a segment of n consecutive live cells and applying the LongLife 2D rule (see comment).at n=40A086993
- Stable Poincaré series [or Poincare series] for Lie algebra of type A (i.e., the variety of complex k X k matrices with distinct eigenvalues).at n=19A098787
- Indices of primes in sequence defined by A(0) = 91, A(n) = 10*A(n-1) + 61 for n > 0.at n=9A101014
- Numbers n>1 with the property that the decimal expansion of n is a permutation of the digits of the decimal expansion of phi(n) and the ratio n/phi(n) is a new record low value.at n=4A102018
- Numbers k such that 5*10^k + 2*R_k + 1 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=12A103009
- Number of solutions to +- 1 +- 2 +- .. +- n = 3.at n=18A113037