9575
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 11904
- Proper Divisor Sum (Aliquot Sum)
- 2329
- 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
- 7640
- Möbius Function
- 0
- Radical
- 1915
- Omega Function (Ω)
- 3
- 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
- 197
- 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
- no
- Odd
- yes
Appears in sequences
- Numbers having period-2 6-digitized sequences.at n=34A031357
- Odd numbers with only palindromic prime factors whose sum is palindromic (counted with multiplicity).at n=31A046356
- Becomes prime or 4 after exactly 8 iterations of f(x) = sum of prime factors of x.at n=38A048130
- Numbers k such that k | 6^k + 5^k + 4^k + 3^k + 2^k.at n=24A057256
- Second term in the continued fraction expansion of StieltjesGamma[n].at n=21A066034
- Number of permutations of length n which avoid the patterns 1243, 4123, 4213.at n=8A116746
- Sum of all parts of all partitions of n that do not contain 1 as a part.at n=24A138880
- Integers of the form 4n+3 for which Sum_{i=1..u} J(i,4n+3) obtains value zero exactly 9 times, when u ranges from 1 to (4n+3). Here J(i,k) is the Jacobi symbol.at n=29A166059
- Sum of parts in all partitions of 2n+1 that do not contain 1 as a part.at n=12A182737
- Number of (n+1)X(n+1) -9..9 symmetric matrices with every 2X2 subblock having sum zero and one, three or four distinct values.at n=2A211555
- Principal diagonal of the convolution array A213778.at n=29A213779
- Numbers decremented by their digit product produce a cube.at n=30A229184
- Numbers that end in (..., 175, 175, 175, ...) under the rule: next term = product of the last four digits in the sequence so far.at n=50A239721
- Numbers n such that A = n - DigitProd(n) is divisible by the largest power of 10 <= A.at n=42A243079
- Number of irredundant sets in the n-dipyramidal graph.at n=14A297712
- Number of compositions of n with runs-resistance equal to cuts-resistance minus 1.at n=18A329869
- Number of integer partitions of n such that the number of parts is equal to the number of distinct divisors of parts.at n=50A371130