Properties of the Number -847

Eight Hundred Forty-Seven

Basics

Value: -848 → -847 → -846

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 11 ²

Divisors: 1, 7, 11, 77, 121, 847

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1101001111

Octal: -1517

Duodecimal: -5A7

Hexadecimal: -34f

Square: 717409

Square Root: 29.103264421710495

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

Numerators of Dirichlet inverse of fraction A003961(n) / σ(n). A354827

Solution to a(1) = 1 and Sum_y Product_i a(y_i) = 0 for each n > 1, where the sum is over all relatively prime or monic partitions of n. A302917

Increasingly larger (in absolute value) extrema of the Mertens function A002321 between subsequent zeros. A304242

Inverse binomial transform of A144472. A145593

Riordan array (2c(-x)-1, xc(-x)³), c(x) the g.f. of A000108. A159971

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 157", based on the 5-celled von Neumann neighborhood. A270332

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 457", based on the 5-celled von Neumann neighborhood. A272283

Expansion of x/(1+x-x³-x⁵-x⁶-x⁷-x⁹+x¹¹+x¹²). A143606

Number of partitions of n that do not contain 1 as a part. A2865

Prime factorization representation of Stern polynomials: a(0) = 1, a(1) = 2, a(2n) = A003961(a(n)), a(2n+1) = a(n)*a(n+1). A260443