9554
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 15228
- Proper Divisor Sum (Aliquot Sum)
- 5674
- 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
- 4480
- Möbius Function
- -1
- Radical
- 9554
- 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
- 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
- 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
- yes
- Odd
- no
Appears in sequences
- Number of walks on cubic lattice.at n=33A005570
- Number of paraffins.at n=33A005998
- Numbers having four 2's in base 8.at n=22A043432
- Numbers whose base-2 representation has exactly 12 runs.at n=17A043579
- a(n) = n*(20 + 15*n + n^2)/6.at n=33A101853
- Even elements of A085493.at n=21A106431
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (-1, 1, 1), (1, -1, 0), (1, 0, 0), (1, 1, -1)}.at n=8A148916
- Transform of Catalan numbers whose Hankel transform satisfies the Somos-4 recurrence.at n=10A157100
- n^2 + {1,3,7} are primes.at n=27A182238
- a(n) = 4*n^2 - n - 1.at n=49A185950
- G.f. satisfies: A(x) = (1 + x*A(x)) * (1 + x^2*A(x))^2.at n=10A218250
- Number of (n+1) X 3 0..1 matrices with each 2 X 2 permanent equal.at n=4A224739
- Number of (n+1) X 6 0..1 matrices with each 2 X 2 permanent equal.at n=1A224742
- T(n,k) is the number of (n+1) X (k+1) 0..1 matrices with each 2 X 2 permanent equal.at n=16A224745
- T(n,k) is the number of (n+1) X (k+1) 0..1 matrices with each 2 X 2 permanent equal.at n=19A224745
- Number of partitions p of n such that the number of numbers p having multiplicity 1 in p is not a part and the number of numbers having multiplicity > 1 is not a part.at n=43A241417
- Numbers k such that 15*10^k + 1 is prime.at n=14A295325
- Row sums of A376168.at n=39A376169