Properties of the Number -6389

Three Hundred Eighty-Nine

Basics

Value: -6390 → -6389 → -6388

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 6389

Divisors: 1, 6389

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1100011110101

Octal: -14365

Duodecimal: -3845

Hexadecimal: -18f5

Square: 40819321

Square Root: 79.93122043357026

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

Coefficients in the power series expansion of A(x) = ∑_n=-oo..+oo n*(n+1)*(n+2)/6·x^3·n * (1 - xⁿ)^n-2. A357156

Exponential reversion of Euler totient function A000010. A50392

Numbers k such that (6^k - 1)/5 is prime. A4062

Number of functional digraphs (digraphs of functions on n nodes where every node has outdegree 1 and loops of length 1 are forbidden). A1373

Primes for which the weight as defined in A117078 is 9 and the gap as defined in A001223 is 8. A118922

Father primes of order 4. A136073

Primes p such that p² +- 30 are also primes. A153119

Smallest prime with digit product 6ⁿ. A91465

Smallest prime q such that (q^p-1)/(q-1) is prime, where p = prime(n); or 0 if no such prime q exists. A123487

Primes of the form 6k - 1 preceding the first-occurrence gaps in A334543. A334544