Properties of the Number -849

Eight Hundred Forty-Nine

Basics

Value: -850 → -849 → -848

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 283

Divisors: 1, 3, 283, 849

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101010001

Octal: -1521

Duodecimal: -5A9

Hexadecimal: -351

Square: 720801

Square Root: 29.13760456866693

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

Triangle composed of generalized Catalan numbers. A64334

G.f. A(x) satisfies A(x) = 1 + x * ((1 - x) / A(x))^3/2. A366433

Generalized Catalan numbers C(-2; n). A64311

Trajectory of 16 under map that sends·to 3x - σ(x). A58542

a(n) = ∑_k=1..n (-1)^k*k³*floor(n/k). A366917

First differences of A142705. A142888

Number of partitions of n into pairwise relatively prime parts. A51424

Coordination sequence T1 for Zeolite Code LTA and ρ. A8137

Numbers obtained by reinterpreting base-2 representation of n in the factorial base: a(n) = ∑_k>=0 A030308(n,k)*A000142(k+1). A59590

Average of twin prime pairs (A014574), divided by 2. Equivalently, 2·a(n)-1 and 2·a(n)+1 are primes. A40040