8886
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 30
- Digital Root
- 3
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 17784
- Proper Divisor Sum (Aliquot Sum)
- 8898
- 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
- 2960
- Möbius Function
- -1
- Radical
- 8886
- 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
- 96
- 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
- Related to representation as sums of squares.at n=20A002292
- Number of Hamiltonian cycles in K_4 X P_n.at n=4A003771
- Expansion of 1/((1-x)(1-7x)(1-10x)(1-11x)).at n=3A024444
- 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 94.at n=2A031592
- Numerators of continued fraction convergents to sqrt(40).at n=4A041066
- Numerators of continued fraction convergents to sqrt(1000).at n=8A042936
- Numbers having three 8's in base 10.at n=30A043523
- Digits composite, each digit minus 1 is prime, sum of digits minus 1 is prime, difference of digits (in absolute value) minus 1 is prime.at n=45A058229
- a(n) = 6*a(n-1) + a(n-2), starting with a(0)=2 and a(1)=6.at n=5A085447
- Column 4 of triangle A091602.at n=39A091607
- Expansion of x*(1-4*x-3*x^2)/(1-5*x+5*x^3+x^4).at n=9A107377
- Triangle, columns generated from Lucas Polynomials.at n=60A117938
- Number of quasi-parity perfect graphs on n nodes.at n=7A123451
- Numbers k such that k and k^2 use only the digits 0, 6, 7, 8 and 9.at n=3A136966
- Numbers m such that the sum of square of factorial of decimal digits is square.at n=45A173689
- Number of nonnegative solutions to x^2 + y^2 + z^2 < n^2.at n=25A218711
- Initial members of abundant quadruplets, i.e., values of k such that (k, k+2, k+4, k+6) are all abundant numbers.at n=18A231089
- For k in {2,3,...,9} define a sequence as follows: a(0)=0; for n>=0, a(n+1)=a(n)+1, unless a(n) ends in k, in which case a(n+1) is obtained by replacing the last digit of a(n) with the digit(s) of k^2. This is k(9).at n=33A237346
- a(n) = n^5 + 5*n^3 + 5*n.at n=6A261391
- Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 173", based on the 5-celled von Neumann neighborhood.at n=26A279599