4795
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6624
- Proper Divisor Sum (Aliquot Sum)
- 1829
- 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
- 3264
- Möbius Function
- -1
- Radical
- 4795
- 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
- 165
- 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
- 10-gonal (or decagonal) numbers: a(n) = n*(4*n-3).at n=35A001107
- Number of rooted planar maps with 4 vertices and n faces and no isthmuses.at n=3A006421
- Numbers k such that k | 7^k + 7.at n=21A015893
- Fermat pseudoprimes to base 4.at n=31A020136
- Pseudoprimes to base 16.at n=40A020144
- Pseudoprimes to base 34.at n=37A020162
- Pseudoprimes to base 59.at n=25A020187
- Pseudoprimes to base 74.at n=26A020202
- Pseudoprimes to base 99.at n=41A020227
- Strong pseudoprimes to base 16.at n=24A020242
- a(n) = position of 3*(n^2) in A000408.at n=43A024800
- Odd 10-gonal (or decagonal) numbers.at n=17A028993
- Number of partitions of n with equal nonzero number of parts congruent to each of 0 and 1 (mod 3).at n=43A035537
- Values of i such that phi(x) = 4i+2 has 4 solutions.at n=9A051479
- Numbers k such that 7*2^k + 5 is prime.at n=15A058595
- Partial sums of A001159: Sum_{j=1..n} sigma_4(j).at n=6A064604
- Numbers n such that ((n-1)^2+1)/2 and n^2+1 and ((n+1)^2+1)/2 are prime if n is even or (n-1)^2+1 and (n^2+1)/2 and (n+1)^2+1 are prime if n is odd.at n=26A082612
- Numbers k such that (89*10^(k-1) + 1)/9 is a depression prime.at n=7A082719
- Map from binary trees of size n to the set of corresponding trivalent plane trees (tpt) represented as size 2n+1 general trees.at n=12A083930
- Number of ways that n boxes with distinct sizes can contain each other under the condition that each box may contain at most three (themselves possibly nested) boxes. Each box is assumed to be large enough to contain any three smaller boxes.at n=6A094198