1349
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 1440
- Proper Divisor Sum (Aliquot Sum)
- 91
- 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
- 1260
- Möbius Function
- 1
- Radical
- 1349
- Omega Function (Ω)
- 2
- 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
- 114
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- Maximal number of pieces obtained by slicing a torus (or a bagel) with n cuts: (n^3 + 3*n^2 + 8*n)/6 (n > 0).at n=19A003600
- Number of n X 3 binary matrices under row and column permutations and column complementations.at n=12A006381
- Noncubes such that some permutation of digits is a cube.at n=46A007940
- Coordination sequence T8 for Zeolite Code EUO.at n=23A008103
- Coordination sequence T6 for Zeolite Code MTW.at n=24A008201
- Coordination sequence T1 for Zeolite Code SGT.at n=23A008229
- Composite but smallest prime factor >= 17.at n=45A008367
- a(n) = floor(n*(n-1)*(n-2)/9).at n=24A011891
- Quadruples of different integers from [ 2,n ] with no common factors between pairs.at n=24A015628
- Numbers n such that phi(n) * sigma(n) + 9 is a perfect square.at n=21A015728
- Odd numbers k such that phi(k) | sigma_3(k).at n=29A015809
- Numbers k such that sigma(k) = sigma(k+8).at n=10A015876
- Six iterations of Reverse and Add are needed to reach a palindrome.at n=22A015984
- Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AET = AlPO4-8 [Al36P36O144] starting with a T4 atom.at n=4A018947
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite CON = CIT-1 H2[B2Si54O112] starting with a T5 atom.at n=10A019101
- Numbers k such that the continued fraction for sqrt(k) has period 24.at n=17A020363
- Expansion of Product_{m>=1} (1+x^m)^19.at n=3A022584
- Place where n-th 1 occurs in A023117.at n=34A022779
- The sequence m(n) in A022905.at n=26A022907
- Convolution of (F(2), F(3), F(4), ...) and A014306.at n=14A023656