Properties of the Number 3890

Three Thousand Eight Hundred Ninety

Basics

Value: 3889 → 3890 → 3891

Parity: even

Prime: No

Previous Prime: 3889

Next Prime: 3907

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 5 × 389

Divisors: 1, 2, 5, 10, 389, 778, 1945, 3890

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100110010

Octal: 7462

Duodecimal: 2302

Hexadecimal: f32

Square: 15132100

Square Root: 62.369864518050704

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

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 3.3.4.3.4 2D tiling (cf. A219529). A299255

Number of points on surface of square pyramid: 3·n² + 2 (n>0). A5918

Sum of three consecutive squares: a(n) = n² + (n + 1)² + (n + 2)². A120328

Number of ordered partitions of [n] such that at least two adjacent parts have the same size. A262046

Number of points on surface of hexagonal prism: 12·n² + 2 for n > 0 (coordination sequence for W(2)). A5914

Positive integers n such that n¹⁴ + 1 is semiprime (A001358). A104335

a(n) = ∑_k=1..n φ(k)². A57434

Sum of smallest parts of all partitions of n into odd parts. A92314

Smallest integer s>n such that 1+2·s+3·s²+...+n·s^n-1 is prime. A217785

Sum of largest parts of all compositions of n. A102712