3599
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3720
- Proper Divisor Sum (Aliquot Sum)
- 121
- 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
- 3480
- Möbius Function
- 1
- Radical
- 3599
- 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
- 69
- 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
- a(n) = 4*n^2 - 1.at n=30A000466
- Numbers that are the sum of 3 nonnegative cubes in more than 1 way.at n=36A001239
- One-half the number of permutations of length n with exactly 3 rising or falling successions.at n=8A001267
- a(n) = n^3 + n^2 - 1.at n=14A003777
- Products of 2 successive primes.at n=16A006094
- Numbers that are the sum of 3 positive cubes in more than one way.at n=25A008917
- Coordination sequence T4 for Zeolite Code RSN.at n=39A009888
- Triangle read by rows: T(n,k) is one-half the number of permutations of length n with exactly n-k rising or falling successions, for n >= 1, 1 <= k <= n. T(1,1) = 1 by convention.at n=32A010028
- Numbers n such that phi(n) * sigma(n) + 4 is a perfect square.at n=42A015727
- Nearest integer to Gamma(n + 7/8)/Gamma(7/8).at n=7A020025
- Ceiling of Gamma(n+7/8)/Gamma(7/8).at n=7A020115
- Pseudoprimes to base 60.at n=12A020188
- Numbers that are the sum of 3 distinct positive cubes in 2 or more ways.at n=15A024974
- Numbers that are the sum of 3 positive cubes in exactly 2 ways.at n=25A025396
- Numbers that are the sum of 3 distinct positive cubes in exactly 2 ways.at n=15A025400
- Probable extension of A013704.at n=13A025495
- "BFK" (reversible, size, unlabeled) transform of 1,3,5,7...at n=11A032046
- Squares of primes or products of pairs of consecutive primes.at n=33A033476
- Conjecturally, a power of 2 written in base 3 cannot have this many 2's.at n=26A036463
- Numbers that are the product of a pair of twin primes.at n=6A037074