Properties of the Number 16989

Sixteen Thousand Nine Hundred Eighty-Nine

Basics

Value: 16988 → 16989 → 16990

Parity: odd

Prime: No

Previous Prime: 16987

Next Prime: 16993

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 7 × 809

Divisors: 1, 3, 7, 21, 809, 2427, 5663, 16989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100001001011101

Octal: 41135

Duodecimal: 99B9

Hexadecimal: 425d

Square: 288626121

Square Root: 130.34185820372517

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

Expansion of x⁴*(1-x-x²)/((1+x)*(1-2·x)*(1-x-2·x²)). A219754

Number of non-equivalent (mod D₄) binary n X n matrices with 4 pairwise nonadjacent 1's. A239576

Number of multisets of exactly seven nonempty binary words with a total of n letters such that no word has a majority of 0's. A316408

Numbers k such that A000110(k) is divisible by k. A325630

Numbers k such that k and k² use only the digits 1, 2, 6, 8 and 9. A137016

Number of nXnXn 0..6 triangular arrays with each element·equal to the number its neighbors equal to 5,0,0,0,0,1,0 for x=0,1,2,3,4,5,6. A205080

Number of integers m, 1 <= m <= A002569(n), that are not terms in the triangle T(n,k) of A008284. A292994

Numbers that are the sum of 11 positive 5th powers. A3356

a(n) = (7·n)⁹. A16989