4962
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 21
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 9936
- Proper Divisor Sum (Aliquot Sum)
- 4974
- 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
- 1652
- Möbius Function
- -1
- Radical
- 4962
- 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
- 41
- 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
- Coordination sequence T5 for Zeolite Code EUO.at n=44A008100
- Number of words of length n (n >= 1) over a two-letter alphabet having a minimal period of size n-1.at n=13A019310
- Sum of squares of first n positive integers congruent to 1 mod 3.at n=11A024215
- 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 70.at n=5A031568
- Numbers m such that m^2 ends in 444.at n=19A039685
- First spoke of a hexagonal spiral.at n=41A056105
- Number of ways to cover (without overlapping) a ring lattice (necklace) of n sites with molecules that are 9 sites wide.at n=43A058364
- Interprimes which are of the form s*prime, s=6.at n=41A075281
- Square root of coefficients of power series: A083352(x)^2 + A083352(x) - 1; term-by-term square root of A083353.at n=70A083354
- a(n)=floor{square((1*n^0+1*n^1+2*n^2+4*n^3)/(1*n^0+2*n^1+1*n^2))}.at n=18A086863
- Number of truncated ST-pairs O(q^n).at n=20A094866
- Numbers n such that (n + prime(n)), (n+1 + prime(n+1)) and (n+2 + prime(n+2)) are divisible by 5.at n=28A107581
- Triangle arising in connection with deformations of type D Kleinian singularities.at n=31A108959
- Numbers k such that k concatenated with k-2 gives the product of two numbers which differ by 9.at n=0A116147
- Absolute differences between A109441 and A100948.at n=18A120722
- Least positive k such that (10^n+1)^n + k is prime.at n=31A121521
- Number of permutations of [n] having no substring [k,k+1,k+2,k+3].at n=7A132647
- Numbers k such that k and k^2 use only the digits 1, 2, 4, 6 and 9.at n=28A136995
- a(n) = 121*n + 1.at n=40A158131
- Row sums of triangle A173302.at n=25A173303