Properties of the Number 9165

Nine Thousand One Hundred Sixty-Five

Basics

Value: 9164 → 9165 → 9166

Parity: odd

Prime: No

Previous Prime: 9161

Next Prime: 9173

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 5 × 13 × 47

Divisors: 1, 3, 5, 13, 15, 39, 47, 65, 141, 195

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001111001101

Octal: 21715

Duodecimal: 5379

Hexadecimal: 23cd

Square: 83997225

Square Root: 95.73400649716902

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Second pentagonal numbers with even index: a(n) = n*(6·n+1). A49453

23-gonal numbers: a(n) = n(21n-19)/2. A51875

Number of partitions of n having no parts with multiplicity 6. A184641

Odd squarefree numbers n such that the cyclotomic polynomial φ(n,x) has height 4. A152942

Numbers n such that A062234(n) = A062234(n+1) = A062234(n+2). A258449

Diagonal sums of number array A082046. A82047

Positions of proper prime powers (A246547) in EKG-sequence. A383295

a(n) = least m such that if r and s in {1/2, 1/5, 1/8, ..., 1/(3n-1)} satisfy r < s, then r < k/m < (k+1)/m < s for some integer k. A24837

Smallest number a(n)>a(n-1) such that T(a(n-1))+T(a(n))=T(m) for some m, a(1)=3; T(i) are the triangular numbers. A72522

Products p·q*r·s of distinct primes for which (p·q*r·s + 1)/2 is prime. A234501