Properties of the Number -9887

Eight Hundred Eighty-Seven

Basics

Value: -9888 → -9887 → -9886

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 9887

Divisors: 1, 9887

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10011010011111

Octal: -23237

Duodecimal: -587B

Hexadecimal: -269f

Square: 97752769

Square Root: 99.43339479269528

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 that remain prime when a single digit 3 is inserted between any two consecutive digits or as the leading or trailing digit. A215419

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

a(0) = 0; a(n) is obtained by incrementing each digit of a(n-1) by 1. A61511

Sum of digits = 8 times number of digits. A61425

Numbers which yield a prime whenever a 3 is prefixed, appended or inserted. A158594

Least prime divisor of the n-th central Delannoy number D(n) which does not divide any D(k) with k < n, or 1 if such a primitive prime divisor of D(n) does not exist. A242173

Primes having only {7, 8, 9} as digits. A106110

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

Primes with either no internal digits or all internal digits are 8. A69683

Primes with integer arithmetic mean of digits = 8 in base 10. A285228