Properties of the Number 6398

Six Thousand Three Hundred Ninety-Eight

Basics

Value: 6397 → 6398 → 6399

Parity: even

Prime: No

Previous Prime: 6397

Next Prime: 6421

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 × 7 × 457

Divisors: 1, 2, 7, 14, 457, 914, 3199, 6398

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1100011111110

Octal: 14376

Duodecimal: 3852

Hexadecimal: 18fe

Square: 40934404

Square Root: 79.98749902328488

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 labeled antichains of finite sets spanning n vertices without singletons. A305001

Number of right triangles of a given area required to form successively larger squares. A60626

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically. A207068

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock summing to a prime. A251459

Number of partitions of n such that the absolute value of the difference between the number of odd parts and the number of even parts is <=1. A239835

Least number·such that xⁿ has n digits equal to k. Case k = 6. A285453

a(n) = Least integer k such that A249431(k) = n, and -1 if no such integer exists. A249430

Partial sums of the sequence (A001097) of twin primes. A48598

Numbers k such that S(k+2) = d(k)+2, where S(k) is the Kempner function (A002034) and d(k) is the number of divisors of k (A000005). A73535

Starting numbers that require more iterations of the map x->A359194(x) (binary complement of 3n) to reach 0 than any smaller number. A359219