Properties of the Number 39998

Thirty-Nine Thousand Nine Hundred Ninety-Eight

Basics

Value: 39997 → 39998 → 39999

Parity: even

Prime: No

Previous Prime: 39989

Next Prime: 40009

Digit Sum: 38

Digital Root: 2

Palindrome: No

Factorization: 2 × 7 × 2857

Divisors: 1, 2, 7, 14, 2857, 5714, 19999, 39998

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000111110

Octal: 116076

Duodecimal: 1B192

Hexadecimal: 9c3e

Square: 1599840004

Square Root: 199.99499993749845

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

Smallest even number with digit sum n. A69532

a(n) is the largest m such that there exists N such that none of S(N), S(N+1), ..., S(N+m-1) is divisible by n, where S(N) is the sum of digits of N. A331786

a(n) = smallest multiple of 7 with a digit sum = n. A77493

Expansion of g.f. Product((1+xⁱ)/(1-xⁱ),i=1..n-1)/(1-xⁿ), with n = 7. A91778

a(n) is the numerator of the expected number of restarts in the procedure described in A372422 if repeated until a single person has been selected. A372932

Primes embedded in prime(n). A39998