9832
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
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 18450
- Proper Divisor Sum (Aliquot Sum)
- 8618
- 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
- 4912
- Möbius Function
- 0
- Radical
- 2458
- 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
- 42
- 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 the continued fraction for sqrt(k) has period 74.at n=33A020413
- a(n) = floor( a(n-1)/a(1) + a(n-3)/a(3) + a(n-5)/a(5) + ... ), for n >= 3 with a(1) = 1 and a(2) = 3.at n=33A022877
- Number of connected triangle-free graphs on n unlabeled nodes.at n=9A024607
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 49.at n=25A031547
- Configurations of linear chains in a square lattice.at n=9A033323
- Numbers whose base-7 representation contains exactly four 4's.at n=4A043412
- Numbers whose base-3 representation contains exactly one 0 and no 2's.at n=34A044994
- Integers i > 1 for which there is no prime p such that i is a solution mod p of x^4 = 2.at n=17A065903
- Sums of rows of the triangle in A116366.at n=38A116367
- Triangle read by rows: T(n,k) gives number of connected graphs on n nodes with clique number n-k, (n>=2, k=0..n-2).at n=44A126744
- a(n)=(-4)*a(n-1)+8 with a(0)=1.at n=7A165622
- A decomposition of the double factorials A001147.at n=46A185410
- A triangular decomposition of the double factorial numbers A001147.at n=53A185411
- Triangular array: (1/2)*A193850.at n=43A193852
- Triangular array: (1/2)*A193851.at n=37A193853
- Number of times the digit 1 appears in the first 10^n digits of Catalan's constant.at n=4A224616
- Numbers n with nonzero digits such that n*(product of digits of n) is a palindrome.at n=25A229550
- Eulerian numbers of type D, the primary type.at n=46A262226
- Eulerian numbers of type D, the complementary type.at n=53A262227
- Integers n such that A002110(n) is divisible by A098999(n).at n=39A264897