4063
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 4320
- Proper Divisor Sum (Aliquot Sum)
- 257
- 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
- 3808
- Möbius Function
- 1
- Radical
- 4063
- 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
- Tribonacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) with a(0)=a(1)=a(2)=1.at n=15A000213
- a(n) is the solution to the postage stamp problem with n denominations and 5 stamps.at n=14A001215
- Coordination sequence T2 for Zeolite Code CON.at n=45A009869
- Continued fraction for zeta(12).at n=1A013688
- Second term in continued fraction for zeta(n).at n=10A013697
- Number of (unordered) triples of integers from [1,n] with no common factors between pairs.at n=42A015617
- a(n) = n*(7*n + 1)/2.at n=34A022265
- Expansion of Product_{m >= 1} (1 + q^m)^(-2).at n=48A022597
- Lucky numbers with size of gaps equal to 18 (upper terms).at n=23A031901
- Coordination sequence T4 for Zeolite Code SFF.at n=42A038434
- Sums of 11 distinct powers of 2.at n=6A038462
- Denominators of continued fraction convergents to sqrt(193).at n=9A041359
- Denominators of continued fraction convergents to sqrt(772).at n=11A042489
- Numbers having three 7's in base 8.at n=17A043451
- Numbers whose base-5 representation contains exactly two 1's and three 2's.at n=18A045228
- Numbers k that divide 10^k + 7^k.at n=3A045606
- Consider all quadruples {a,b,c,d} which reach {k,k,k,k} in n steps under map {a,b,c,d}->{|a-b|,|b-c|,|c-d|,|d-a|}; look at max{a,b,c,d}; sequence gives minimal value of this.at n=21A045794
- An approximation to sigma_{5/2}(n): round( sum_{d|n} d^(5/2) ).at n=25A058273
- An approximation to sigma_{5/2}(n): ceiling( sum_{d|n} d^(5/2) ).at n=25A058274
- Numbers k such that sigma(k) - phi(k) is a cube.at n=24A062385