Properties of the Number -3898

Eight Hundred Ninety-Eight

Basics

Value: -3899 → -3898 → -3897

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 × 1949

Divisors: 1, 2, 1949, 3898

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111100111010

Octal: -7472

Duodecimal: -230A

Hexadecimal: -f3a

Square: 15194404

Square Root: 62.433965115151864

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

G.f.: ∑_n>=0 (xⁿ⁺¹ + i)ⁿ / (1 + i·xⁿ)ⁿ⁺¹, in which the constant term is taken to be 1. A323690

Coordination sequence for (2,3,7) tiling of hyperbolic plane. A265057

Interprimes (A024675) which are of the form s·prime, s=2. A75277

Sum of digits = 7 times number of digits. A61424

Positive numbers that are not the sum of a triangular number, a nonnegative cube and a positive Fibonacci number. A115177

Integers that need 6 iterations of the map x->A352172(x) to reach 1. A352264

a(n) = ∑_{i+j=n, i,j >= 1} τ(i)*σ(j), where τ() = A000005(), σ() = A000203(). A191831

Number T(n,k) of tilings of a 5 X n rectangle with pentominoes of any shape and exactly k pentominoes of shape X; triangle T(n,k), n>=0, read by rows. A247711

Expansion of ∏_k>=1 1 / ((1 - x^k) * (1 - x^k³)). A369579

Sum of the partition numbers of the proper divisors of n, with a(1) = 0. A168111