Properties of the Number 39979

Thirty-Nine Thousand Nine Hundred Seventy-Nine

Basics

Value: 39978 → 39979 → 39980

Parity: odd

Prime: Yes

Previous Prime: 39971

Next Prime: 39983

Digit Sum: 37

Digital Root: 1

Palindrome: No

Factorization: 39979

Divisors: 1, 39979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1001110000101011

Octal: 116053

Duodecimal: 1B177

Hexadecimal: 9c2b

Square: 1598320441

Square Root: 199.9474931075656

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 p whose period of reciprocal equals (p-1)/9. A56214

Triangle T(n,k) by rows: number of ways k dominoes can be placed on an n X n chessboard, k>=0. A242861

Primes p such that p's set of distinct digits is {3,7,9}. A108385

Primes with digit sum = 37. A106771

Primes p such that the multiplicative order of 2 modulo p is (p-1)/9. A152309

Number of 4-matchings of the n X n grid graph. A243215

a(n) = a(n-1) + a(n-2) + 1, with a(0)=3, a(1)=12. A22411

Number of n-digit numbers with nonzero multiplicative digital root 4. A51815

Prime p such that p⁵ + p³ + p - 4 and p⁵ + p³ + p + 4 are primes. A243900

Values of A109812(k) where k/A109812(k) reaches a new high point. A352920