6390934 has 8 divisors (see below), whose sum is σ = 10457928. Its totient is φ = 2904960.

The previous prime is 6390907. The next prime is 6390947. The reversal of 6390934 is 4390936.

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 6390934.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145227 + ... + 145270.

It is an arithmetic number, because the mean of its divisors is an integer number (1307241).

Almost surely, 2^6390934 is an apocalyptic number.

6390934 is a deficient number, since it is larger than the sum of its proper divisors (4066994).

6390934 is a wasteful number, since it uses less digits than its factorization.

6390934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290510.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 6390934 is about 2528.0296675474. The cubic root of 6390934 is about 185.5758439071.

The spelling of 6390934 in words is "six million, three hundred ninety thousand, nine hundred thirty-four".