4059
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
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6552
- Proper Divisor Sum (Aliquot Sum)
- 2493
- 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
- 2400
- Möbius Function
- 0
- Radical
- 1353
- 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
- 64
- 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
- a(n) = 6*a(n-1) - a(n-2) + 2 with a(0) = 0, a(1) = 3.at n=5A001652
- a(n) = round(n*phi^10), where phi is the golden ratio, A001622.at n=33A004945
- a(n) = ceiling(n*phi^10), where phi is the golden ratio, A001622.at n=33A004965
- Coordination sequence T6 for Zeolite Code DDR.at n=40A008076
- Number of ordered 5-tuples of integers from [ 1..n ] with no global factor.at n=11A015650
- a(n) = n*(25*n + 1)/2.at n=18A022283
- Self-convolution of (1, p(1), p(2), ...).at n=16A023626
- a(n) = T(n,n+2), T given by A027023.at n=11A027024
- a(n) = n^3 + (n+1)^3 + (n+2)^3.at n=10A027602
- Divisors of 9999999999.at n=15A027895
- 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=7A031561
- Number of unordered sets a, b, c, d of distinct integers from 1..n such that a+b+c+d = 0 (mod n).at n=47A032801
- a(1) = 8; a(n) is smallest number >= a(n-1) such that the juxtaposition a(1)a(2)...a(n) is a prime.at n=31A046258
- Related to Pythagorean triples: alternate terms of A001652 and A046090.at n=5A046727
- Expansion of 1/((1 - x)*(1 - 2*x - x^2)).at n=9A048739
- a(n)=Sum{a(k): k=0,1,2,...,n-3,n-1}; a(n-2) is not a summand; 2 initial terms required.at n=15A049854
- Fourth column (r=3) of FS(3) staircase array A062745.at n=26A062748
- Number of 10 X n binary arrays with path of adjacent 1's from upper right corner to lower left corner.at n=1A069332
- (Sum of digits of n)^4 - (sum of digits of n^4).at n=44A069978
- (Sum of digits of n)^4 - (sum of digits of n^4).at n=26A069978