8786
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 29
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 6
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 13824
- Proper Divisor Sum (Aliquot Sum)
- 5038
- 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
- 4180
- Möbius Function
- -1
- Radical
- 8786
- 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
- 140
- 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
- Powers of cube root of 7 rounded to nearest integer.at n=14A017995
- Powers of cube root of 7 rounded up.at n=14A017996
- Length of n-th term of A022470.at n=31A022471
- Numbers with multiplicative persistence value 6.at n=9A046515
- Integer part of log(n^n)^(1 + log(1 + log(n))).at n=17A062449
- Nearest integer to log(n^n)^(1 + log(1 + log(n))).at n=17A062450
- Successive maxima in sequence A007365.at n=6A065933
- n times n+5 gives the concatenation of two numbers m and m+3.at n=5A116310
- Coefficients of the sixth-order mock theta function psi_{-}(q).at n=26A153252
- Greatest number m such that the fractional part of (Pi-2)^A153719(m) >= 1-(1/m).at n=11A153723
- Greatest number m such that the fractional part of (Pi-2)^A153720(n) >= 1-(1/m).at n=5A153724
- Polynomial expansion of p(x)=1/(1 - 3 x + 2 x^2 + 2 x^3 - 4 x^4 + 4 x^5 - 2 x^6 - 2 x^7 + 3 x^8 - x^9 - x^17 + 3 x^18 - 2 x^19 - 2 x^20 + 4 x^21 - 4 x^22 + 2 x^23 + 2 x^24 - 3 x^25 + x^26).at n=31A164787
- Multiples of 23 whose digit reversal - 1 is also a multiple of 23.at n=14A166400
- First terms "a" of quadruples a>b>c>d>0 with six square pairwise sums.at n=21A175534
- A002110(n)-(p[i]+p[i+1]+...+p[i+n-1]), where p[i] is the largest prime such that this is nonnegative.at n=49A196129
- Composite numbers whose multiplicative persistence is 6.at n=9A199996
- Number of (w,x,y) with all terms in {0,...,n} and the numbers w,x,y,|w-x|,|x-y| distinct.at n=23A213490
- Triangle read by rows: T(n,k) gives the number of ballot sequences of length n having exactly k descents, n>=0, 0<=k<=n.at n=70A238121
- Irregular triangle read by rows: T(n,k) gives the number of ballot sequences of length n having k descents, n>=0, 0<=k<=A083920(n-1).at n=40A238122
- Number of ballot sequences of length n having exactly four descents.at n=3A241797