Properties of the Number -169209

One Hundred Sixty-Nine Thousand Two Hundred Nine

Basics

Value: -169210 → -169209 → -169208

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁴ × 2089

Divisors: 1, 3, 9, 27, 81, 2089, 6267, 18801, 56403, 169209

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101001010011111001

Octal: -512371

Duodecimal: -81B09

Hexadecimal: -294f9

Square: 28631685681

Square Root: 411.3502157529518

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

a(n) = 3a(n-1) + 3a(n-2). a(0) = 1, a(1) = 4. A125145

Coefficients of numerator of recursively defined rational function: p(x,3)=x*(x² + 6·x + 1)/(1 - x)⁴; p(x, n) = 2·x*D[p(x, n - 1), x] - p(x,n-2). A166349

Triangle read by rows: T(n,k) is the number of sequences of length n on the alphabet {0,1,2,3}, containing k subsequences 00 (0<=k<=n-1). A128235

Number of n X 9 binary matrices with no 2 X 2 block having four 1's. A181252

Number of rooted fullerenes with n faces, where "rooted" means that one triple (v,e,f) is distinguished, where v is a vertex, e is an edge on that vertex and f is a face on that edge. A203977