4436
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 7770
- Proper Divisor Sum (Aliquot Sum)
- 3334
- 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
- 2216
- Möbius Function
- 0
- Radical
- 2218
- 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
- 20
- 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 n-node steric rooted ternary trees; number of n carbon alkyl radicals C(n)H(2n+1) taking stereoisomers into account.at n=11A000625
- Coordination sequence T6 for Zeolite Code MTT.at n=41A008194
- Expansion of 1/(1-x^10-x^11-x^12-x^13-x^14-x^15).at n=74A017891
- Numbers k such that the continued fraction for sqrt(k) has period 62.at n=13A020401
- a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 2), t = (Lucas numbers).at n=12A024310
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 30 ones.at n=31A031798
- Numbers whose sum of reciprocals of digits is the reciprocal of an integer.at n=43A037264
- Sum of reciprocals of digits = 1.at n=25A037268
- Sums of 5 distinct powers of 4.at n=10A038473
- Numbers whose base-3 representation contains exactly four 0's and no 1's.at n=22A044985
- Numbers whose base-3 representation contains exactly four 0's and four 2's.at n=1A045013
- Numbers whose base-5 representation contains exactly two 1's and three 2's.at n=28A045228
- Expansion of (1-x)/(1 - 10*x + 18*x^2 - 8*x^3).at n=4A045993
- Starting index of a string of 3 or more consecutive equal digits in decimal expansion of Pi.at n=35A049515
- Starting index of a string of exactly 3 consecutive equal digits in decimal expansion of Pi.at n=29A049519
- Numbers k such that 285*2^k-1 is prime.at n=31A050901
- a(n) = T(n,n-3), array T as in A055818.at n=26A055820
- Harmonic mean of digits is 4.at n=27A062182
- Number of subsets of {1,2,...,n} that contain the average of their elements.at n=15A065795
- Partial sums of sequence of odd primes (A065091); a(n) = sum of the first n odd primes.at n=45A071148