14905
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 19584
- Proper Divisor Sum (Aliquot Sum)
- 4679
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10800
- Möbius Function
- -1
- Radical
- 14905
- Omega Function (Ω)
- 3
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 45
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- An upper bound on the biplanar crossing number of the complete graph on n nodes.at n=45A007333
- exp(arctan(x)+arcsin(x))=1+2*x+4/2!*x^2+7/3!*x^3+8/4!*x^4+25/5!*x^5...at n=9A012985
- sinh(arctan(x)+arcsin(x))=2*x+7/3!*x^3+25/5!*x^5+1985/7!*x^7...at n=4A012990
- Pseudoprimes to base 54.at n=37A020182
- Strong pseudoprimes to base 54.at n=11A020280
- a(n) = (2*n+1)*(10*n+1).at n=27A033574
- Numbers n such that A048767(n+1)=A048767(n).at n=20A048769
- Numbers that are sums of 2 or more consecutive squares in more than 1 way.at n=21A062681
- Numbers k such that sopf(k) + 1 = sopf(k+1), where sopf(k) = A008472(k).at n=19A064111
- Row sums of A123539.at n=24A123540
- Numbers that are the sum of one or more consecutive squares in more than one way.at n=27A130052
- a(n) = total number of different ways a grasshopper can take n hops.at n=19A141002
- a(n) = 46*n^2 + 1.at n=18A158632
- Number of length 2n sequences p(i=0..2n-1) with 0<=p(i)<=i and having exactly n maxima.at n=4A181225
- Number of Carmichael numbers between 2^n and 2^(n+1).at n=46A182490
- Sum of prime divisors of n (with repetition) is one less than the sum of prime divisors (with repetition) of n+1.at n=22A228126
- Composite numbers n such that lambda(n) divides 5n-5, where lambda is the Carmichael lambda function (A002322).at n=41A231572
- Numbers n such that (i) the sum of prime divisors of n (with repetition) is one less than the sum of prime divisors (with repetition) of n+1, and (ii) n and n+1 have the same number of prime divisors (with repetition).at n=9A237929
- Number of partitions of 4n into 4 parts.at n=31A238340
- Numbers of words on {0,1,2,3} having no isolated zeros.at n=8A255813