9266
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 23
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 14364
- Proper Divisor Sum (Aliquot Sum)
- 5098
- 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
- 4480
- Möbius Function
- -1
- Radical
- 9266
- 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
- 109
- 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
- a(n) = n*(11*n+1)/2.at n=41A022269
- Duplicate of A022269.at n=40A026817
- Smallest multiple of (n+1)-st prime which is == 1 mod n-th prime.at n=28A073604
- a(n) = n^3 + 5.at n=21A084381
- Smallest m such that A123699(m) = n.at n=18A123700
- Numbers n such that n^2 contains no digit less than 5.at n=40A175471
- G.f. satisfies: A(x) = exp( Sum_{n>=1} (A(x) + (-1)^n)^n * x^n/n ).at n=10A202669
- Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of A203955.at n=22A203956
- Number of primes up to 10^n that are of the form (k-1)^2 + k^2.at n=9A218208
- Number of distinct values of the sum of 4 products of three 0..n integers.at n=13A225261
- Number of partitions of n into distinct parts with boundary size 8.at n=32A227565
- Number of binary strings of length n avoiding the pattern x x x^R (where x^R means reverse of x).at n=50A241903
- Permutation of natural numbers, a composition of A241909 and A064216: a(n) = A064216(A241909(n)).at n=40A243061
- First row of spectral array W(1/sin(1)).at n=9A248850
- Erroneous version of A271811 (but for odd primes only).at n=13A271664
- 5-untouchable numbers.at n=18A284187
- Numbers k such that 5 is the smallest decimal digit of k^2.at n=25A291630
- Number of unlabeled series-reduced rooted trees with n nodes where the non-leaf branches directly under any given node are all equal.at n=21A320268
- Numbers k with a Goldbach partition (p,q) such that k | (p*q - 1).at n=49A336582
- a(n) = n * Sum_{d|n} sigma(d)^2 / d.at n=44A344042