Properties of the Number -8789

Seven Hundred Eighty-Nine

Basics

Value: -8790 → -8789 → -8788

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 11 × 17 × 47

Divisors: 1, 11, 17, 47, 187, 517, 799, 8789

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10001001010101

Octal: -21125

Duodecimal: -5105

Hexadecimal: -2255

Square: 77246521

Square Root: 93.74966666607408

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) = (1/2)*(1 + ∑_k=0..n binomial(2·k, k)). A24718

Every run of digits of n in base 16 has length 2. A33014

Sum of digits = 8 times number of digits. A61425

Shortest edge c of (measured by the longest edge) primitive Euler bricks (a, b, c, sqrt(a² + b²), sqrt(b² + c²), sqrt(a² + c²) are integers). A31175

Squarefree integers m > 1 such that if prime p divides m, then the sum of the base p digits of m is at least p. A324315

a(n) = number of Egyptian fractions 1 = 1/x₁ + ... + 1/x_k (for any k), 0<x₁<...<x_k=n. A92669

Right-angled numbers with an internal digit as the vertex. A135602

T(n,k)=Number of length n+4 0..k arrays with every five consecutive terms having two times the sum of some three elements equal to three times the sum of the remaining two. A248987

Beginning with 3, least number such that concatenation of first n terms and its digit reversal both are primes. A111382

Triangle read by rows where T(n,k) is the number of nonempty subsets of {1,...,2n-1} with median n and minimum k. A361654