4238
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 6888
- Proper Divisor Sum (Aliquot Sum)
- 2650
- 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
- 1944
- Möbius Function
- -1
- Radical
- 4238
- 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
- 82
- 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 paraffins.at n=25A005998
- a(n) = floor( n*(n-1)*(n-2)/11 ).at n=37A011893
- a(1) = 1; a(n+1) = floor((sum{k=1 to n} a(k)^3)^(1/3)).at n=44A016085
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite VET = VPI-8 [Si17O34] starting with a T4 atom.at n=11A019250
- Least term in period of continued fraction for sqrt(n) is 10.at n=13A031434
- Numbers k such that A102489(k) is divisible by k.at n=19A032563
- Numerators of continued fraction convergents to sqrt(809).at n=5A042560
- Starting from generation 6 add previous and next term yielding generation 7.at n=18A048453
- Number of rational points of Klein curve over GF(2^n).at n=11A048635
- Local ranks of terms of A057122.at n=34A057124
- Coordination sequence T2 for Zeolite Code SFE.at n=43A057318
- a(n) = Sum_{i=1..n} Sum_{j=1..i} (prime(i) - prime(j)).at n=18A062020
- Dimension of the space of weight n cuspidal newforms for Gamma_1( 88 ).at n=32A063361
- Integers for which the periodic part of the continued fraction for the square root of n begins with 10.at n=42A065013
- a(n) = sigma_2(n) + phi(n) * sigma(n).at n=44A072779
- Numerators of "Farey fraction" approximations to Pi.at n=38A097545
- C(2n-1,n-1) mod n^4.at n=11A099908
- Least multiple of prime(n) ending in digits of n.at n=34A114012
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (0, 1, 0), (1, -1, 0), (1, 1, -1)}.at n=9A148196
- a(n) = 169*n^2 + 13.at n=5A158548