Properties of the Number 80989

Eighty Thousand Nine Hundred Eighty-Nine

Basics

Value: 80988 → 80989 → 80990

Parity: odd

Prime: Yes

Previous Prime: 80963

Next Prime: 81001

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 80989

Divisors: 1, 80989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110001011101

Octal: 236135

Duodecimal: 3AA51

Hexadecimal: 13c5d

Square: 6559218121

Square Root: 284.5856637288674

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

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

Primes p such that φ(p+1) = φ(p-1). A67890

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

a(0)=1, a(1)=1, a(n) = 13·a(n/2) for n=2,4,6,..., a(n) = 12·a((n-1)/2) + a((n+1)/2) for n=3,5,7,.... A116524

Numbers k such that sum of digits of k = sum of digits of anti-divisors of k. A213239

Row sums of triangle A141210. A141211

Primes p such that p²*q²*r² + 12 and p²*q²*r² - 12 are primes where q and r are next two primes after p. A240725

Primes having only {0, 2, 8, 9} as digits. A386055

Primes having only {0, 5, 8, 9} as digits. A386081

Number of 2-trees rooted at a triangle with two similar edges. A63692