Properties of the Number 19439

Nineteen Thousand Four Hundred Thirty-Nine

Basics

Value: 19438 → 19439 → 19440

Parity: odd

Prime: No

Previous Prime: 19433

Next Prime: 19441

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 7 × 2777

Divisors: 1, 7, 2777, 19439

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 100101111101111

Octal: 45757

Duodecimal: B2BB

Hexadecimal: 4bef

Square: 377874721

Square Root: 139.4238143216574

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

Total number of right truncatable primes in base n. A76586

Numbers having no 0's and not more than one 1 in their representation in base 3. A188341

Number of Schur rings over Z_3ⁿ. A270785

a(n) = n⁸ + 7·n⁷ + 34·n⁶ + 111·n⁵ + 275·n⁴ + 511·n³ + 703·n² + 623·n + 13. A270872

a(1) = 1, a(2) = 2; for n >= 2, a(n+1) = a(n) + sum of the unique prime factors of a(n). A96460

a(n) = 60·n² - 1. A158670

Numbers k such that either k or k+1 is divisible by the numbers from 1 to 10. A131663

Number of (1+1) X (n+1) arrays of permutations of 0..n·2+1 filled by rows with each element moved a city block distance of 0 or 2, and rows and columns in increasing lexicographic order. A263603

Number of distinct cardinalities of orbits of lattice points under the automorphism group of the n-dimensional integer lattice. A270950

Numbers whose base-3 representation contains no 0's and exactly one 1. A44966