8935
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
- 4
- Divisor Sum
- 10728
- Proper Divisor Sum (Aliquot Sum)
- 1793
- 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
- 7144
- Möbius Function
- 1
- Radical
- 8935
- 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
- 109
- 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
- Smallest number of complexity n: smallest number requiring n 1's to build using +, * and ^.at n=23A003037
- 11*n^2 + 11*n + 3.at n=28A006222
- (d(n)-r(n))/5, where d = A026046 and r is the periodic sequence with fundamental period (1,0,4,0,0).at n=47A026048
- Numbers k such that 165*2^k+1 is prime.at n=49A032459
- Numerators of continued fraction convergents to sqrt(648).at n=4A042244
- Sum of the reverses of the first n primes.at n=38A071602
- Numbers n such that 3^n + 2^(n-1) is prime.at n=37A082103
- Numbers n such that 6n+5, 6n+11, 6n+17, 6n+23 are consecutive primes or 6n+1, 6n+7, 6n+13, 6n+19 are consecutive primes.at n=19A090833
- Numbers k such that 6*k+1, 6*k+7, 6*k+13, 6*k+19 are consecutive primes.at n=9A090839
- Number of partitions of n such that the set of parts has an even number of elements.at n=36A092306
- Least k such that Sum_{r=n+1..k} r >= n!.at n=10A093000
- Numbers k such that 10^k + 7*R_k + 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=9A102943
- Number of compositions of n with exactly 4 adjacent equal parts.at n=12A106360
- Sum of all parts of the last section of the set of partitions of n.at n=23A138879
- a(n) = ((5+sqrt(2))*(1+sqrt(2))^n + (5-sqrt(2))*(1-sqrt(2))^n)/2.at n=9A162268
- Number of strings of numbers x(i=1..5) in 0..n with sum i*x(i) equal to n*5.at n=15A184705
- Number of binary arrays indicating the locations of trailing edge maxima of a random length-n 0..3 array extended with zeros and convolved with 1,3,3,1.at n=19A222022
- Number of tilings of a 5 X n rectangle using n pentominoes of shapes I, N, P, U, T.at n=8A247103
- Concatenation of n-th prime and n-th nonprime.at n=23A253910
- Start of first run of length n in Golomb's sequence A001462.at n=43A262986