4866
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 24
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 9744
- Proper Divisor Sum (Aliquot Sum)
- 4878
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 1620
- Möbius Function
- -1
- Radical
- 4866
- Omega Function (Ω)
- 3
- 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
- 46
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- 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
- yes
- Odd
- no
Appears in sequences
- Number of partitions of n in which no part occurs just once.at n=48A007690
- Coordination sequence T3 for Zeolite Code AEL.at n=46A008006
- a(0) = 1, a(n) = 19*n^2 + 2 for n>0.at n=16A010009
- Numbers k such that the continued fraction for sqrt(k) has period 54.at n=21A020393
- 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 68.at n=19A031566
- Numbers having three 6's in base 9.at n=12A043479
- Number of topologically distinct ways to dissect a rectangle into n rectangles.at n=7A049021
- [ (phi + sqrt(phi))^n ], phi = (1+sqrt(5))/2.at n=8A050242
- a(n) = 4*n^2 - 9*n + 6.at n=35A054556
- Triangle T(n,k) of numbers of minimal 5-covers of an unlabeled n+5-set that cover k points of that set uniquely (k=5,..,n+5).at n=41A057968
- Sum of the first n safe primes.at n=19A066869
- Interprimes which are of the form s*prime, s=6.at n=40A075281
- A Wallis pair (x,y) satisfies sigma(x^2) = sigma(y^2); sequence gives x's for indecomposable Wallis pairs with x < y (ordered by values of x).at n=17A075768
- Initial values for iteration of the function f(x) = A063919(x) such that the iteration ends in a 14-cycle, i.e., in A097030.at n=39A097034
- a(n) is the number of positive integers <= 10^n that are divisible by no prime exceeding 3.at n=37A100752
- Numbers k such that the k-th triangular number contains only digits {1,4,8}.at n=3A119129
- Maximum cycle size in range [A014137(n-1)..A014138(n-1)] of permutation A125987/A125988.at n=10A126296
- Triangle read by rows: T(n,k) = C(n) + C(k) - 1 where C(n) = A000108(n) are the Catalan numbers, 0 <= k <= n.at n=48A131429
- Analog of A060410 for the 5x+1 problem (cf. A133419).at n=9A133424
- Positions of 15 after decimal point in decimal expansion of Pi.at n=44A134215