3393
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 5460
- Proper Divisor Sum (Aliquot Sum)
- 2067
- 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
- 2016
- Möbius Function
- 0
- Radical
- 1131
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 43
- 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
- no
- Odd
- yes
Appears in sequences
- Number of partitions of n into Fibonacci parts (with a single type of 1).at n=49A003107
- Number of 3-covers of an unlabeled n-set.at n=12A005783
- a(n) = n*(4*n+1).at n=29A007742
- Coordination sequence T2 for Zeolite Code -ROG.at n=44A009860
- Coordination sequence T1 for Zeolite Code TER.at n=39A016433
- Powers of fifth root of 3 rounded down.at n=37A018120
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RUT = RUB-10 R4[B4Si32O72] starting from a T5 atom.at n=11A019230
- Fibonacci sequence beginning 0, 9.at n=14A022092
- a(n) = n*(21*n-1)/2.at n=18A022278
- a(1) = 3; a(n+1) = a(n)-th nonprime, where nonprimes begin at 1.at n=26A025004
- Character of extremal vertex operator algebra of rank 29/2.at n=3A028536
- Numbers k that divide the (right) concatenation of all numbers <= k written in base 13 (most significant digit on left).at n=28A029458
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 4.at n=41A031428
- Concatenations C1 and C2 are both prime (see the comment lines).at n=42A034815
- a(n) = floor(E_(n+1)/E_(n)) where E_n is n-th Euler number (see A028296 and A000364).at n=44A034971
- Number of odd nonprimes <= (2n+1)^2.at n=47A038377
- Coordination sequence T1 for Zeolite Code STF.at n=39A038443
- Numbers having three 3's in base 10.at n=23A043503
- Numbers whose base-15 representation has exactly 4 runs.at n=2A043671
- Numbers k such that the string 8,0 occurs in the base 9 representation of k but not of k-1.at n=45A044323