9544
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 22
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 17910
- Proper Divisor Sum (Aliquot Sum)
- 8366
- 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
- 4768
- Möbius Function
- 0
- Radical
- 2386
- Omega Function (Ω)
- 4
- 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
- 104
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- 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
- yes
- Odd
- no
Appears in sequences
- Numbers k such that phi(k + 10) | (sigma(k) + 10).at n=3A015874
- Expansion of 1/(1-x^4-x^5-x^6-x^7-x^8-x^9).at n=37A017831
- Numbers k such that 267*2^k-1 is prime.at n=35A050892
- Triangle in A059037 read by rows from left to right.at n=22A059038
- Triangle in A059037 read by rows in natural order.at n=26A059039
- G.f.: 1/((1-x)^2*(1-x^2)*(1-x^4)*(1-x^8)*(1-x^16)).at n=50A088954
- First subdiagonal of triangular array T: T(j,1) = 1 for ((j-1) mod 8) < 4, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j.at n=14A131075
- Formal infinite product representation for the Catalan numbers (A000108) o.g.f. series.at n=9A157161
- Partial sums of floor(Fibonacci(n)/3).at n=21A179001
- Triangle by rows, A033452 convolved with A000079.at n=33A180338
- Number of permutations p of 1,2,...,n satisfying |p(i+3)-p(i)|<>4 and |p(j+4)-p(j)|<>3 for all i=1..n-3, j=1..n-4.at n=8A189568
- Number of ways to place n nonattacking composite pieces rook + rider[3,4] on an n X n chessboard.at n=7A189858
- Table of the elementary symmetric functions a_k(1,2,3,4,6,...,n+1) (5 missing).at n=32A196844
- Number of -n..n arrays x(0..3) of 4 elements with zero sum and elements alternately strictly increasing and strictly decreasing.at n=15A200058
- Number of 2 X 2 matrices having all terms in {-n,...,0,...,n} and determinant n-1.at n=21A211141
- Number of partitions of n having depth 1; see Comments.at n=34A237685
- Prime sieve of Phi.at n=41A247861
- Numbers k such that 3*10^k + 89 is prime.at n=19A276642
- Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 563", based on the 5-celled von Neumann neighborhood.at n=13A283047
- Coefficients of the expansion of Sum_{i,j,k>=1} x^(i*j*k)/((1-x^i)*(1-x^j)*(1-x^k)).at n=35A350596