11914
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 21888
- Proper Divisor Sum (Aliquot Sum)
- 9974
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4752
- Möbius Function
- 1
- Radical
- 11914
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 50
- 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 partitions of n that do not contain 1 as a part.at n=44A002865
- Number of 5-dimensional centered tetrahedral numbers.at n=11A008499
- Numbers k such that k^2 and k^3 have the same set of digits.at n=14A029797
- Numbers that, when expressed in base 6 and then interpreted in base 10, yield a multiple of the original number.at n=8A032546
- Consider the trajectory of n under the iteration of a map which sends x to 3x - sigma(x) if this is >= 0; otherwise the iteration stops. The sequence gives values of n which eventually reach 0.at n=22A037159
- Golden rectangular box numbers: a(n) = n*A007067(n)*A007067(A007067(n)).at n=14A050510
- Molien series for group H_{1,3}^{8} of order 2304.at n=34A051531
- Numbers k that, when expressed in base 6 and then interpreted in base 10, give a multiple of k.at n=9A062942
- Composite numbers k such that phi(k + d(k)) = phi(k) + d(k), where phi() = A000010(), d() = A000005().at n=17A063702
- Composite n such that (n-1)*phi(n) is a perfect square.at n=19A069953
- Fifth subdiagonal in array of n-gonal numbers A081422.at n=22A081436
- Number of partitions of n including 3, but not 1.at n=46A085811
- Number of partitions of n into parts not less than the smallest prime factor of n.at n=43A097360
- Number of partitions of n with unique smallest part and unique largest part.at n=43A117298
- A129957(n) - n*(n-1)/2.at n=23A129959
- Numbers k such that k and k^2 use only the digits 1, 3, 4, 6 and 9.at n=21A137027
- a(n) = 361*n + 1.at n=32A158310
- Number of binary strings of length n with no substrings equal to 0001 0111 or 1100.at n=16A164484
- Bisection (even part) of number of partitions that do not contain 1 as a part A002865.at n=22A182746
- Number of partitions of n that do not contain parts less than the smallest part of the partitions of n-1.at n=43A187219