1396
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 19
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 2450
- Proper Divisor Sum (Aliquot Sum)
- 1054
- 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
- 696
- Möbius Function
- 0
- Radical
- 698
- 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
- 34
- 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
- Number of alkyls C_{n+15} H_{2n+10} (Phenan) with n carbon atoms.at n=5A000649
- 2nd differences are periodic.at n=27A002082
- Representation degeneracies for boson strings.at n=26A005291
- Centered triangular numbers: a(n) = 3*n*(n-1)/2 + 1.at n=30A005448
- Related to representations as sums of Fibonacci numbers.at n=32A006133
- Discriminants of totally real cubic fields.at n=39A006832
- Coordination sequence T2 for Zeolite Code MEL.at n=24A008151
- Coordination sequence T2 for Zeolite Code NAT.at n=25A008204
- Coordination sequence T1 for feldspar.at n=25A008254
- Coordination sequence T2 for feldspar.at n=25A008255
- Number of 3 X 3 symmetric stochastic matrices under row and column permutations.at n=43A008764
- Expansion of (1 + 2*x^2 + x^3)/((1 - x)^2*(1 - x^3)).at n=45A008822
- Coordination sequence T3 for Zeolite Code -ROG.at n=28A009861
- Coordination sequence T1 for Zeolite Code VNI.at n=23A009907
- Five iterations of Reverse and Add are needed to reach a palindrome.at n=33A015982
- Number of lines through exactly 4 points of an n X n grid of points.at n=20A018811
- Numbers k such that Fibonacci(k) == 3 (mod k).at n=19A023175
- Convolution of A000201 and A014306.at n=44A023666
- Least m such that if r and s in {1/3, 1/6, 1/9, ..., 1/3n} satisfy r < s, then r < k/m < (k+1)/m < s for some integer k.at n=16A024838
- a(n) = least m such that if r and s in {1/1, 1/3, 1/5, ..., 1/(2n-1)} satisfy r < s, then r < k/m < (k+2)/m < s for some integer k.at n=16A024841