Properties of the Number 84609

Eighty-Four Thousand Six Hundred Nine

Basics

Value: 84608 → 84609 → 84610

Parity: odd

Prime: No

Previous Prime: 84589

Next Prime: 84629

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 17 × 79

Divisors: 1, 3, 7, 9, 17, 21, 51, 63, 79, 119

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100101010000001

Octal: 245201

Duodecimal: 40B69

Hexadecimal: 14a81

Square: 7158682881

Square Root: 290.8762623522243

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

Number of length 2+3 0..n arrays with every four consecutive terms having the sum of some three elements equal to three times the fourth. A248539

Number of nX5 0..1 arrays with every element unequal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A318034

Coefficients of 1/sqrt(1-4·x-8·x²); also, a(n) is the central coefficient of (1+2·x+3·x²)ⁿ. A84609

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A318037