Properties of the Number 19899

Nineteen Thousand Eight Hundred Ninety-Nine

Basics

Value: 19898 → 19899 → 19900

Parity: odd

Prime: No

Previous Prime: 19891

Next Prime: 19913

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 11 × 67

Divisors: 1, 3, 9, 11, 27, 33, 67, 99, 201, 297

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100110110111011

Octal: 46673

Duodecimal: B623

Hexadecimal: 4dbb

Square: 395970201

Square Root: 141.06381534610497

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

Sum of largest parts (counted with multiplicity) of all partitions of n. A92321

T(n,k) = Half the number of n X k binary arrays with no element equal to a strict majority of its horizontal and vertical neighbors. A183312

Wiener index of a benzenoid consisting of a spiral chain of n hexagons (s=1; see the Gutman et al. reference). A193391

Numbers which are the sum of two positive cubes and divisible by 11. A101852

a(n) = ∑_d∣n d³*A000593(n/d). A288419

Binomial transform of Chebyshev coefficients A001794. A81279

T(n, 2·n-4), T given by A027960. A27966

Indices of records in A347113. A347308

Half the number of nX5 binary arrays with no element equal to a strict majority of its horizontal and vertical neighbors. A183306

Half the number of nX7 binary arrays with no element equal to a strict majority of its horizontal and vertical neighbors. A183308