6393 has 4 divisors (see below), whose sum is σ = 8528. Its totient is φ = 4260.

The previous prime is 6389. The next prime is 6397. The reversal of 6393 is 3936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6389) and next prime (6397).

It is not a de Polignac number, because 6393 - 2² = 6389 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (6397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1063 + ... + 1068.

It is an arithmetic number, because the mean of its divisors is an integer number (2132).

2⁶³⁹³ is an apocalyptic number.

It is an amenable number.

6393 is a deficient number, since it is larger than the sum of its proper divisors (2135).

6393 is a wasteful number, since it uses less digits than its factorization.

6393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134.

The product of its digits is 486, while the sum is 21.

The square root of 6393 is about 79.9562380306. The cubic root of 6393 is about 18.5595838814.

The spelling of 6393 in words is "six thousand, three hundred ninety-three".