6398904 has 32 divisors (see below), whose sum is σ = 16272000. Its totient is φ = 2096352.

The previous prime is 6398897. The next prime is 6398923. The reversal of 6398904 is 4098936.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 3675.

It is an arithmetic number, because the mean of its divisors is an integer number (508500).

Almost surely, 2^6398904 is an apocalyptic number.

It is an amenable number.

6398904 is an abundant number, since it is smaller than the sum of its proper divisors (9873096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6398904 is a wasteful number, since it uses less digits than its factorization.

6398904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587 (or 4583 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 6398904 is about 2529.6055028403. The cubic root of 6398904 is about 185.6529544450.

Subtracting from 6398904 its reverse (4098936), we obtain a cube (2299968 = 132³).

The spelling of 6398904 in words is "six million, three hundred ninety-eight thousand, nine hundred four".