Properties of the Number 11919

Eleven Thousand Nine Hundred Nineteen

Basics

Value: 11918 → 11919 → 11920

Parity: odd

Prime: No

Previous Prime: 11909

Next Prime: 11923

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 29 × 137

Divisors: 1, 3, 29, 87, 137, 411, 3973, 11919

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111010001111

Octal: 27217

Duodecimal: 6A93

Hexadecimal: 2e8f

Square: 142062561

Square Root: 109.17417276993676

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

Numbers whose multiset multisystem (A302242) is crossing. A324170

Toothpick sequence in the three-dimensional grid. A160160

Number of polyforms with n cells on the faces of a disdyakis triacontahedron up to rotation. A383497

Triangle read by rows: T(n,k) is the number of free polyominoes with n cells and length k, n >= 1, k = 1..n. A379624

Number of compositions (ordered partitions) of n into distinct parts >= 3. A339101

a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 3, where m = 2·n - 2 - 2^p+1 and p is the unique integer such that 2^p < n-1 <= 2^p+1, starting with a(1) = a(2) = 1. A49943

Numbers using only digits 1 and 9. A284294

Expansion of ∏_k>=1 ((1 + x^k) / (1 - x^4·k))^k. A285458

Number of maximal subsets of {1..n} containing no sums or products of distinct elements. A326025

Column l=3 of irregular triangle in A133709. A133710