Properties of the Number 19959

Nineteen Thousand Nine Hundred Fifty-Nine

Basics

Value: 19958 → 19959 → 19960

Parity: odd

Prime: No

Previous Prime: 19949

Next Prime: 19961

Digit Sum: 33

Digital Root: 6

Palindrome: No

Factorization: 3 × 6653

Divisors: 1, 3, 6653, 19959

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100110111110111

Octal: 46767

Duodecimal: B673

Hexadecimal: 4df7

Square: 398361681

Square Root: 141.2763249805147

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

Number of subsets of {1..n} whose cardinality cannot be written as a nonnegative linear combination of the elements. A367223

Number of integer partitions of n whose parts all divide n and whose length also divides n. A326842

Number of partitions of n such that (greatest part) + (least part) > number of parts. A237870

Main diagonal of Unlucky array: a(n) = A255543(n,n). A255549

Numbers n such that the Collatz iterations for n and n + 1 have the same length (A078417) but do not meet a certain condition. (See comments.) A274410

Odd numbers k such that φ(k) and cototient(k) have the same prime signature. A280927

Number of partitions of n with at most four part sizes. A364793

Numbers k such that k divides the (right) concatenation of all numbers <= k written in base 19 (most significant digit on right). A61948

Row sums of (numerator) triangle A119947. A119949

Number of length 3+1 0..n arrays with the sum of the maximum of each adjacent pair multiplied by some arrangement of +-1 equal to zero. A250647