8099
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 26
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 10080
- Proper Divisor Sum (Aliquot Sum)
- 1981
- 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
- 6336
- Möbius Function
- -1
- Radical
- 8099
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 65
- 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
- no
- Odd
- yes
Appears in sequences
- a(n) = (4*n+1)*(4*n+3).at n=22A001539
- Numbers that are the sum of 9 nonzero 8th powers.at n=16A003387
- Pseudoprimes to base 90.at n=16A020218
- Second elementary symmetric function of 3,4,...,n+3.at n=12A024183
- Numbers whose base-5 representation contains exactly two 2's and three 4's.at n=33A045288
- First numerator and then denominator of the elements to the right of the central elements of the 1/3-Pascal triangle (by row), excluding 1's and 3's.at n=51A046549
- Distinct odd numbers in the numerators of the 1/3-Pascal triangle (by row).at n=28A046557
- Distinct numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/3-Pascal triangle (by row).at n=50A046560
- Distinct odd numbers in writing first numerator and then denominator of each element to the right of the central elements of the 1/3-Pascal triangle (by row).at n=28A046561
- Numbers k such that A055079(k) = 2^k.at n=22A057838
- Squarefree numbers k with largest prime factor = floor(sqrt(k)).at n=14A071311
- Numbers k such that the largest prime power factor of k equals floor(sqrt(k)).at n=38A081807
- a(n) is the area of the triangle with sides prime(n), prime(n+2) and prime(n+4), rounded down to the nearest integer.at n=27A096384
- Numbers that reach the fixed point 89 under iteration of f(x) = reverse(x) - maxdigit(x).at n=9A097155
- Row sums of triangle A115237.at n=23A115238
- Expansion of 1/(sqrt(1-2*x-3*x^2)*(2-M(x))), where M(x) is the g.f. of the Motzkin numbers A001006.at n=8A116387
- a(n) = (2*n+1)*(n+1)*(2*n^2+3*n-1).at n=6A123197
- Positive numbers of the form 4*n^2 - 1 which are not semiprimes.at n=36A123754
- a(n) = 9*n^2-1.at n=29A136016
- a(n) = 36n^2 - 1.at n=14A136017