Properties of the Number 1389

One Thousand Three Hundred Eighty-Nine

Basics

Value: 1388 → 1389 → 1390

Parity: odd

Prime: No

Previous Prime: 1381

Next Prime: 1399

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 463

Divisors: 1, 3, 463, 1389

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10101101101

Octal: 2555

Duodecimal: 979

Hexadecimal: 56d

Square: 1929321

Square Root: 37.26929030716845

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

Number of balanced partitions of n: the largest part equals the number of parts. A47993

Number of reduced words of length n in the Weyl group E₆ on 6 generators and order 51840. A161409

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 3⁴.6 2D tiling (cf. A250120). A299254

Coefficients for expansion of (g(x)d/dx)ⁿ g(x); refined Eulerian numbers for calculating compositional inverse of h(x) = (d/dx)^-1 1/g(x); iterated derivatives as infinitesimal generators of flows. A145271

Inverse binomial transform of primes. A7442

Numbers m such that the Bernoulli number B_2·m has denominator 42. A51227

Sum of first n composite numbers. A53767

Expansion of ∑_k>=0 x^k²+k/((1-x)(1-x²)...(1-x^2k)). A122134

Composite and every divisor (except 1) contains the digit 3. A62668

Analog of A121805, but starting with 2. A139284