4083
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 5448
- Proper Divisor Sum (Aliquot Sum)
- 1365
- 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
- 2720
- Möbius Function
- 1
- Radical
- 4083
- 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
- 64
- 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
- Eulerian numbers (Euler's triangle: column k=2 of A008292, column k=1 of A173018).at n=12A000295
- Number of minimally 2-edge-connected non-isomorphic graphs with n nodes.at n=10A001072
- Mu-molecules in Mandelbrot set whose seeds have period n.at n=12A006876
- Poincaré series (or Poincare series) of Lie algebra associated with a certain braid group.at n=5A007994
- a(n) = Sum_{k=0..10} binomial(n,k).at n=12A008863
- Coordination sequence T4 for Zeolite Code -PAR.at n=45A009858
- Coordination sequence T5 for Zeolite Code CON.at n=45A009872
- Odd numbers in the triangle of Eulerian numbers.at n=43A014459
- Odd numbers in the triangle of Eulerian numbers.at n=38A014459
- Odd numbers in the triangle of Eulerian numbers that are not 1.at n=16A014461
- Odd numbers in the triangle of Eulerian numbers that are not 1.at n=21A014461
- Triangular array formed from elements to right of middle of rows of the triangle of Eulerian numbers.at n=34A014467
- Triangular array formed from elements to right of middle of rows of the triangle of Eulerian numbers that are greater than 1.at n=24A014468
- Triangular array formed from odd elements to right of middle of rows of the triangle of Eulerian numbers (A008292).at n=20A014469
- Triangular array formed from odd elements to right of middle of rows of the triangle of Eulerian numbers that are greater than 1.at n=10A014470
- Distinct elements occurring in triangle of Eulerian numbers (unsorted).at n=26A014630
- Coordination sequence T4 for Zeolite Code MWW.at n=42A024989
- Distinct elements occurring in triangle of Eulerian numbers (sorted).at n=14A030196
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 63.at n=9A031561
- Numerator of Sum_{i=1..n} i/2^i.at n=11A036295