4168
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
- 8
- Divisor Sum
- 7830
- Proper Divisor Sum (Aliquot Sum)
- 3662
- 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
- 2080
- Möbius Function
- 0
- Radical
- 1042
- Omega Function (Ω)
- 4
- 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
- 126
- 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
- a(n) = floor(n*phi^13), where phi is the golden ratio, A001622.at n=8A004928
- a(n) = round(n*phi^13), where phi is the golden ratio, A001622.at n=8A004948
- Coordination sequence T1 for Zeolite Code AWW.at n=46A008045
- Numbers that are the sum of 3 positive cubes in more than one way.at n=32A008917
- Numbers k such that phi(k) + 9 | sigma(k + 9).at n=38A015788
- Numbers that are the sum of 3 distinct positive cubes in 2 or more ways.at n=20A024974
- Numbers that are the sum of 3 positive cubes in exactly 2 ways.at n=32A025396
- Numbers that are the sum of 3 distinct positive cubes in exactly 2 ways.at n=20A025400
- Number of similarity classes of triangles which can be drawn using the lattice points in an n X n grid for vertices.at n=13A028492
- 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 31.at n=21A031529
- Sums of distinct powers of 8.at n=22A033045
- Base 8 digits are, in order, the first n terms of the periodic sequence with initial period 1,0,1.at n=4A033126
- Positive numbers having the same set of digits in base 2 and base 8.at n=18A037413
- Sum of first n primes of form 4k-1.at n=31A038347
- Coordination sequence T15 for Zeolite Code STT.at n=43A038427
- Sums of 3 distinct powers of 8.at n=6A038485
- Numbers having three 1's in base 8.at n=30A043427
- Numbers whose base-4 representation contains exactly four 0's and two 1's.at n=19A045035
- Numbers whose base-4 representation contains exactly four 0's and one 2.at n=34A045058
- Numbers whose base-5 representation contains exactly three 1's and three 3's.at n=1A045247