3114
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 9
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6786
- Proper Divisor Sum (Aliquot Sum)
- 3672
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1032
- Möbius Function
- 0
- Radical
- 1038
- Omega Function (Ω)
- 4
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 123
- 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
- Describe the previous term! (method A - initial term is 4).at n=3A001140
- Squares written in base 7.at n=32A002440
- Number of permutations of n elements with distinct cycle lengths.at n=7A007838
- Coordination sequence T4 for Zeolite Code DAC.at n=35A008070
- Coordination sequence T3 for Zeolite Code -ROG.at n=42A009861
- Incomplete version of A016070.at n=6A014716
- Numbers k such that k^2 contains exactly 2 distinct digits.at n=28A016069
- Numbers k such that k^2 contains exactly 2 different digits, excluding 10^m, 2*10^m, 3*10^m.at n=19A016070
- a(n) = position of 3*n^3 in A003072.at n=20A024970
- Denominators of continued fraction convergents to sqrt(819).at n=10A042581
- Numbers having four 4's in base 5.at n=14A043368
- Numbers n such that string 1,4 occurs in the base 10 representation of n but not of n-1.at n=34A044346
- Numbers n such that string 1,4 occurs in the base 10 representation of n but not of n+1.at n=34A044727
- a(n) = a(n-1) + a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n - 1 <= 2^(p+1), starting with a(1) = a(2) = 1 and a(3) = 2.at n=28A050031
- Numbers k such that k^2 contains only digits {1,6,9}.at n=8A053910
- Numbers k such that k^2 contains only digits {2,6,9}.at n=4A053930
- Numbers k such that k^2 contains only digits {3,6,9}.at n=6A053948
- Numbers k such that k^2 contains only digits {4,6,9}.at n=7A053960
- Numbers k such that k^2 contains only digits {5,6,9}.at n=4A053970
- Numbers k such that k^2 contains only digits {6,7,9}.at n=4A053972