Properties of the Number -9895

Eight Hundred Ninety-Five

Basics

Value: -9896 → -9895 → -9894

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 5 × 1979

Divisors: 1, 5, 1979, 9895

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10011010100111

Octal: -23247

Duodecimal: -5887

Hexadecimal: -26a7

Square: 97911025

Square Root: 99.47361459201129

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 a-sequence for Sheffer matrix A130191 (Stirling2 squared). A130408

Numerator of ∑_k=1..n 1/φ(k). A28415

Numbers k such that k² == 2 (mod 23²). A156849

a(n) = (prime(1+n)*prime(n)) + prime(n) + 1. A286624

Numbers that are the sum of ten fourth powers in exactly nine ways. A345861

Lucky numbers with size of gaps equal to 20 (lower terms). A31902

Integers of the form 4n+3 for which ∑_i=1..u J(i,4n+3) obtains value zero exactly 7 times, when u ranges from 1 to (4n+3). Here J(i,k) is the Jacobi symbol. A166057

E.g.f.: exp( exp(3·x) - 2·exp(2·x) + 2·exp(x) - 1 ). A194006

Least number of consecutive primes beginning with 2, the sum of which (A007504) exceeds eⁿ. A323361

a(n) = ∑_k=1..n sigma₂(k) * floor(n/k). A356042