Properties of the Number -189209

One Hundred Eighty-Nine Thousand Two Hundred Nine

Basics

Value: -189210 → -189209 → -189208

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 431 × 439

Divisors: 1, 431, 439, 189209

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101110001100011001

Octal: -561431

Duodecimal: -915B5

Hexadecimal: -2e319

Square: 35800045681

Square Root: 434.9816088066253

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

Odd composites k, not powers of primes, such that for all their nontrivial unitary divisors d it holds that A347381(d) > A347381(k). A347383

Numbers k such that exactly three d in the range d <= k/2 exist which divide binomial(k-d-1,d-1) and which are not coprime to k. A178099

Expansion of (theta₃(x) - 1)³ / (4 * (3 - theta₃(x))). A347806

Expansion of (theta₃(x) - 1)⁴ / (8 * (3 - theta₃(x))). A347807

After the initial 1, numbers k such that A347381 obtains its minimum value at k, of all the divisors d of k larger than one, where A347381 is the distance from n to the nearest common ancestor of n and σ(n) in the Doudna-tree (A005940). A374218

Number of zeros in n-th even perfect number written in base 16. A161496