Properties of the Number -8689

Six Hundred Eighty-Nine

Basics

Value: -8690 → -8689 → -8688

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 8689

Divisors: 1, 8689

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10000111110001

Octal: -20761

Duodecimal: -5041

Hexadecimal: -21f1

Square: 75498721

Square Root: 93.2148056909416

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

Primes from merging of 4 successive digits in decimal expansion of sqrt(2). A198164

Primes from merging of 4 successive digits in decimal expansion of the Golden Ratio, (1+sqrt(5))/2. A103810

FP1 polynomials related to the generating functions of the right hand columns of the A156920 triangle. A156921

a(n) = prime(n*(n+1)/2 + 1). A78721

Fundamental discriminants of real quadratic number fields with class number 5. A94614

Primes having only {6, 8, 9} as digits. A385800

Primes whose digits are composite; primes having only {4, 6, 8, 9} as digits. A51416

Primes having only 0,4,6,8,9 as digits. A61372

Primes having only {6, 7, 8, 9} as digits. A106111

Primes p such that p⁵ - 2 is also prime. A154834