Properties of the Number 19739

Nineteen Thousand Seven Hundred Thirty-Nine

Basics

Value: 19738 → 19739 → 19740

Parity: odd

Prime: Yes

Previous Prime: 19727

Next Prime: 19751

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 19739

Divisors: 1, 19739

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110100011011

Octal: 46433

Duodecimal: B50B

Hexadecimal: 4d1b

Square: 389628121

Square Root: 140.49555153100044

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 such that p's set of distinct digits is {1,3,7,9}. A108386

Number of ways to tile an n X n X n triangular area with three 2 X 2 X 2 triangular tiles and an appropriate number (= n²-12) of 1 X 1 X 1 tiles. A286438

Primes of the form n²-n-1 (for some n) such that p²-p-1 is also prime. A237642

Inverse binomial transform of the number of planar partitions (A000219). A294501

Primes p such that p-12, p and p+12 are consecutive primes. A53072

Primes with all odd digits such that the next three primes also contain all odd digits. A68831

Primes of the form 4·n² + 2·n -1. A155737

Balanced primes of order one ending in 9. A303095

Numbers k such that h(k) = h(k-1) + h(k-2), where h(k) = A006577(k) + 1 is the length of the sequence {k, f(k), f(f(k)), ...., 1} in the Collatz (or 3x + 1) problem. (The earliest "1" is meant.) A78418

Prime Friedman numbers. A112419