8079
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 10776
- Proper Divisor Sum (Aliquot Sum)
- 2697
- 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
- 5384
- Möbius Function
- 1
- Radical
- 8079
- 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
- 145
- 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
- Numbers n such that n is a substring of its square when both are written in base 2.at n=48A018826
- Numbers k such that the continued fraction for sqrt(k) has period 66.at n=39A020405
- Least k>1 such that first n terms of A022303 repeat beginning at k-th term.at n=54A025519
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 29.at n=34A031527
- Number of partitions in parts not of the form 21k, 21k+1 or 21k-1. Also number of partitions with no part of size 1 and differences between parts at distance 9 are greater than 1.at n=41A035979
- Number of partitions of n in which each part occurs an odd number (or zero) times.at n=41A055922
- Numbers k such that 6^k+5^(k-1) is prime.at n=20A093765
- Records in A111229.at n=30A111270
- a(n) = floor(log(A111288(n))).at n=28A111388
- Number of planar partitions that are not corners.at n=15A115982
- Numbers n such that 9n^2 is a zeroless pandigital number.at n=16A162859
- Number of partitions of n+7 with largest inscribed rectangle having area <= n.at n=25A218628
- Odd numbers which are factored to the same set of primes in Z as to the irreducible polynomials in GF(2)[X]; odd terms of A235036.at n=22A235039
- Semiprimes which are the arithmetic mean of three consecutive primes.at n=34A242218
- Numbers n such that 1+16n^2, 1+16(n+1)^2 and 1+16(n+2)^2 are prime.at n=28A255635
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 429", based on the 5-celled von Neumann neighborhood.at n=21A272113
- Numbers such that the sum of their digits is equal to the sum of digits of their aliquot parts.at n=43A274218
- Number of compositions (ordered partitions) of n into multiplicatively perfect numbers (A007422).at n=31A282569
- Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 579", based on the 5-celled von Neumann neighborhood.at n=14A283089
- The number of nonunitary abundant numbers below 10^n.at n=4A307823