9331
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 11264
- Proper Divisor Sum (Aliquot Sum)
- 1933
- 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
- 7560
- Möbius Function
- -1
- Radical
- 9331
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 135
- 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
- a(n) = (6^n - 1)/5.at n=6A003464
- Pseudoprimes to base 6.at n=25A005937
- Coordination sequence for alpha-Mn, Position Mn3.at n=25A009952
- Pseudoprimes to base 44.at n=45A020172
- Pseudoprimes to base 50.at n=45A020178
- Pseudoprimes to base 79.at n=37A020207
- Pseudoprimes to base 87.at n=44A020215
- Strong pseudoprimes to base 36.at n=17A020262
- Numbers whose base-6 representation is the juxtaposition of two identical strings.at n=42A020334
- Triangle of Gaussian binomial coefficients [ n,k ] for q = 6.at n=22A022170
- Triangle of Gaussian binomial coefficients [ n,k ] for q = 6.at n=26A022170
- Gaussian binomial coefficients [ n,5 ] for q = 6.at n=1A022223
- a(n) = n^0 + n^1 + ... + n^(n-1), or a(n) = (n^n-1)/(n-1) with a(0)=0; a(1)=1.at n=6A023037
- Central heptanomial coefficients: largest coefficient of (1+x+...+x^6)^n.at n=6A025012
- For n>0, a(n) is the least quasi-Carmichael number to base -n, extended to n=0 with the least composite squarefree integer.at n=29A029591
- Lucky numbers with size of gaps equal to 16 (upper terms).at n=27A031899
- Numbers that are repdigits in base 6.at n=26A048331
- 22-gonal numbers: a(n) = n*(10*n-9).at n=31A051874
- a(n) = 111111 in base n.at n=5A053700
- Repunits in different bases: table by antidiagonals of numbers written in base k as a string of n 1's.at n=60A055129