9113
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 9828
- Proper Divisor Sum (Aliquot Sum)
- 715
- 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
- 8400
- Möbius Function
- 1
- Radical
- 9113
- 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
- 60
- 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
- Base-5 Armstrong or narcissistic numbers (written in base 10).at n=13A010346
- a(n) = n*(27*n - 1)/2.at n=26A022284
- Describe the previous term! (method B - initial term is 9).at n=3A022505
- Least m such that if r and s in {1/4, 1/8, 1/12, ..., 1/4n} satisfy r < s, then r < k/m < (k+1)/m < s for some integer k.at n=36A024839
- Number of n-node rooted unlabeled trees with exactly 3 edges at root and otherwise out-degree <= 2.at n=16A036658
- Denominators of continued fraction convergents to sqrt(514).at n=6A041983
- a(n) = floor(47*(n-3/2)^(3/2)).at n=33A050256
- a(n) = (2*n-1)^2 + (2*n)^2.at n=33A060820
- Reversion of y - y^2 - y^3 + y^4 - y^5.at n=9A063027
- Reverse of smallest prime factor of k = largest prime factor of k+1; a(1)=1.at n=9A071392
- a(n) = 8*n^2 - 4*n + 1.at n=34A080856
- Column k=2 sequence of array A103728.at n=31A103729
- Number of sets {p, p'}, where p is a partition of n and p' is conjugate partition of p such that p and p' have no common parts.at n=60A114701
- Multiples of 13 containing a 13 in their decimal representation.at n=23A121033
- Numbers k such that binomial(5k, k) - 1 is prime.at n=13A125242
- Records in A018892.at n=46A126097
- Positive numbers y such that y^2 is of the form x^2+(x+137)^2 with integer x.at n=8A157213
- Base 5 perfect digital invariants (written in base 10): numbers equal to the sum of the k-th powers of their base-5 digits, for some k.at n=16A162222
- Greatest integer equal to the sum of the n-th powers of its base-5 digits (written in base 10).at n=6A162224
- Nonprimes of the form (k^2+1)/2.at n=43A166080