Properties of the Number 80909

Eighty Thousand Nine Hundred Nine

Basics

Value: 80908 → 80909 → 80910

Parity: odd

Prime: Yes

Previous Prime: 80897

Next Prime: 80911

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 80909

Divisors: 1, 80909

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011110000001101

Octal: 236015

Duodecimal: 3A9A5

Hexadecimal: 13c0d

Square: 6546266281

Square Root: 284.445073784026

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

a(n) = Smallest nontrivial number k > 9 such that |first (leftmost) decimal digit of k - second digit + third digit - fourth digit ...| = n. A60982

Smallest number m such that first digit - second digit + third digit - fourth digit ... (of m) = n. A61479

a(n) = Smallest nontrivial number k > 9 such that first (leftmost) digit - second digit + third digit - fourth digit ... of k = n. A61882

Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[2, 6,6]; short d-string notation of pattern = [266]. A78849

List of primes p1 such that (p1,p2) are twin primes where both 2·p1+p2 and p1+2·p2 are primes. A174920

Primes whose consecutive digits differ by 8 or 9. A48420

Primes having only {0, 8, 9} as digits. A385772

Primes having only {0, 6, 8, 9} as digits. A53580

Primes p such that the differences between the 5 consecutive primes starting with p are (2,6,6,6). A78951

Primes formed by an m-digit prime concatenated with its last (m-1) digits, for m > 1. A252667