10449
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 16016
- Proper Divisor Sum (Aliquot Sum)
- 5567
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 6804
- Möbius Function
- 0
- Radical
- 129
- Omega Function (Ω)
- 6
- 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
- 86
- 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
- Powers of fourth root of 5 rounded down.at n=23A018057
- Powers of fourth root of 5 rounded to nearest integer.at n=23A018058
- Numbers k such that the continued fraction for sqrt(k) has period 76.at n=29A020415
- Numbers k such that k and 9*k are anagrams.at n=3A023093
- Composite numbers whose prime factors contain no digits other than 3 and 4.at n=19A036314
- Number of partitions of n into a prime number of parts.at n=39A038499
- Gaps of 10 in sequence A038593 (upper terms).at n=8A038660
- Numbers ending with '9' that are the difference of two positive cubes.at n=34A038864
- Odd numbers divisible by exactly 6 primes (counted with multiplicity).at n=34A046319
- Sum of a(n) terms of 1/k^(3/4) first exceeds n.at n=37A056179
- Numbers n such that n | 12^n + 11^n + 10^n + 9^n + 8^n + 7^n.at n=29A057257
- Leading term of n-th row of A081491.at n=32A081490
- Numbers k such that 9*10^k - 11 is prime.at n=11A100275
- a(n) = -a(n-1) -a(n-2) -a(n-3) +a(n-4), a(0)=0, a(1)=1, a(2)=-1, a(3)=0.at n=41A100329
- Numbers n such that both n and prime(n) consist of square digits (0,1,4,9).at n=4A107613
- Matrix cube-root of triangle A107717.at n=31A107719
- Numbers k such that the sum of the digits of (k^k - k!) is divisible by k.at n=19A109662
- Number of 4-dimensional partitions of n up to conjugacy.at n=15A119267
- a(0)=a(1)=a(2) = 1. a(n) = (a(n-1) +a(n-2)) /GCD(a(n-1)+a(n-2),a(n-3)), for n >= 3.at n=33A123274
- a(n) = numerator of the continued fraction which has the positive divisors of n as its terms.at n=17A127611