6388493 has 8 divisors (see below), whose sum is σ = 6518400. Its totient is φ = 6259968.

The previous prime is 6388483. The next prime is 6388507. The reversal of 6388493 is 3948836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6388493 - 2⁶ = 6388429 is a prime.

It is a super-2 number, since 2×6388493² = 81625685622098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6388493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6388433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15038 + ... + 15456.

It is an arithmetic number, because the mean of its divisors is an integer number (814800).

Almost surely, 2^6388493 is an apocalyptic number.

It is an amenable number.

6388493 is a deficient number, since it is larger than the sum of its proper divisors (129907).

6388493 is a wasteful number, since it uses less digits than its factorization.

6388493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691.

The product of its digits is 124416, while the sum is 41.

The square root of 6388493 is about 2527.5468343831. The cubic root of 6388493 is about 185.5522141674.

The spelling of 6388493 in words is "six million, three hundred eighty-eight thousand, four hundred ninety-three".