9074
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 14700
- Proper Divisor Sum (Aliquot Sum)
- 5626
- 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
- 4176
- Möbius Function
- -1
- Radical
- 9074
- 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
- 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
- yes
- Odd
- no
Appears in sequences
- Number of points on surface of tricapped prism: a(n) = 7*n^2 + 2 for n > 0, a(0)=1.at n=36A005919
- Coordination sequence for CaF2(1), F position.at n=32A009924
- a(0) = 1, a(n) = 28*n^2 + 2 for n>0.at n=18A010018
- Numerators of continued fraction convergents to sqrt(725).at n=4A042396
- Numbers whose base-5 representation contains exactly three 2's and three 4's.at n=4A045292
- Numbers k such that 171*2^k-1 is prime.at n=27A050837
- n*10^2-1, n*10^2-3, n*10^2-7 and n*10^2-9 are all prime.at n=17A064976
- Composite numbers k such that (k+1)*sigma(k) is a perfect square.at n=6A073586
- J(n)^2+J(n+1)^2, with J(n) the Jacobsthal number A001045(n).at n=7A108924
- Expansion of (1 - 2*x - sqrt(1 - 4*x - 8*x^2))/(6*x^2).at n=7A122871
- 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, 0, -1), (0, 1, -1), (1, 0, 1)}.at n=8A149355
- 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, 1), (-1, 1, 0), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.at n=7A150566
- a(n) = n^3 mod (n-th prime squared).at n=26A167623
- Powers of sqrt(5) - 1 rounded down.at n=42A179241
- a(n) = 5*n^2 - 4*n + 1.at n=43A190816
- Number of n X 3 0..2 arrays with every row and column nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=32A201272
- Number of 4 X 4 X 4 triangular 0..n arrays with every horizontal row nondecreasing, first elements of rows nonincreasing, last elements of rows nondecreasing, and every row having the same average value.at n=10A215184
- Numbers n such that a positive number m < n exists such that n-m, n+m, and n*m are oblong numbers (A002378).at n=3A224954
- Numbers k, the smallest of at least 4 consecutive numbers x, for which phi(x) <= phi(x+1).at n=29A295865
- Determinant of n X n matrix containing the first n^2 composites in increasing order.at n=20A321685