Properties of the Number 89989

Eighty-Nine Thousand Nine Hundred Eighty-Nine

Basics

Value: 89988 → 89989 → 89990

Parity: odd

Prime: Yes

Previous Prime: 89983

Next Prime: 90001

Digit Sum: 43

Digital Root: 7

Palindrome: No

Factorization: 89989

Divisors: 1, 89989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101111110000101

Octal: 257605

Duodecimal: 440B1

Hexadecimal: 15f85

Square: 8098020121

Square Root: 299.9816661064472

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 that contain digits 8 and 9 only. A20472

Primes having only {6, 8, 9} as digits. A385800

Numbers whose smallest decimal digit is 8. A284069

Primes having only {2, 8, 9} as digits. A385790

Primes having only {5, 8, 9} as digits. A385798

Primes having only {4, 8, 9} as digits. A385796

Smaller of 3 consecutive prime numbers such that p1·p2·p3+d1+d2-1=average of twin prime pairs, d1(δ)=p2-p1,d2(δ)=p3-p2. A153402

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

Primes with digit sum = 43. A106775

Value of prime number D for incrementally largest values of minimal·satisfying the equation x² - D·y² = 5. A341079