11944
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 22410
- Proper Divisor Sum (Aliquot Sum)
- 10466
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5968
- Möbius Function
- 0
- Radical
- 2986
- 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
- 24
- 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
- Aliquot sequence starting at 180.at n=19A008891
- Maximum cycle size in range [A014137(n-1)..A014138(n-1)] of permutation A082333/A082334.at n=14A089419
- Total number of parts in all compositions of n into distinct odd parts.at n=39A097936
- The number of hierarchical orderings among the parts of the integer partitions of the integer n.at n=8A104525
- a(n)=numerator of the probability that (x-y)/(x+y)+(y-z)/(y+z)+(z-u)/(z+u)+ (u-x)/(u+x)>0, assuming that each random quadruple of integers (x,y,z,u), with a<=x,y,z,u<=n, is equally likely.at n=12A106199
- Numbers x such that 0 < |x^5 - y^4| < x^(11/4) for some number y.at n=4A173357
- Positive integers of the form (7*m^2+1)/11.at n=24A179370
- Fundamental discriminants of real quadratic number fields with class number 10.at n=27A218160
- Number of strict partitions of 2n + 1 having an ordering of the parts in which no two neighboring parts have the same parity.at n=33A239883
- Number of length n+2 0..7 arrays with every three consecutive terms having the sum of some two elements equal to twice the third.at n=8A248432
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 545", based on the 5-celled von Neumann neighborhood.at n=22A272836
- a(n) = 108*n^2 - 104*n + 20 (n>=1).at n=10A304835
- Starts of runs of 3 consecutive Zeckendorf-Niven numbers (A328208).at n=14A328210
- Expansion of e.g.f. sinh( (exp(2*x) - 1)/sqrt(2) )/sqrt(2).at n=7A357664
- Least k such that A359247(k) = n, or 0 if no such k exists.at n=15A359657