Properties of the Number 39989

Thirty-Nine Thousand Nine Hundred Eighty-Nine

Basics

Value: 39988 → 39989 → 39990

Parity: odd

Prime: Yes

Previous Prime: 39983

Next Prime: 40009

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 39989

Divisors: 1, 39989

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 1001110000110101

Octal: 116065

Duodecimal: 1B185

Hexadecimal: 9c35

Square: 1599120121

Square Root: 199.972498109115

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 remain prime when a single digit 9 is inserted between any two consecutive digits or as the leading or trailing digit. A215421

Smallest prime with digit sum n, or 0 if no such prime exists. A67180

Primes having only {3, 8, 9} as digits. A385792

Primes related to the strictly increasing subsequence of A053666. A230041

Primes at which sum of digits strictly increases. A61248

The smallest prime with a possible given digit sum. A67523

Smallest prime whose digital sum is equal to the n-th composite number, or 0 if no such prime exists. A73867

Primes of the form n² - 11. A91272

Primes with digit sum = 38. A106772

Smallest prime whose digital sum is equal to the n-th composite number not congruent to 0 (modulo 3). A111380