904438 has 8 divisors (see below), whose sum is σ = 1428120. Its totient is φ = 428400.

The previous prime is 904399. The next prime is 904441. The reversal of 904438 is 834409.

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

It is a congruent number.

It is an unprimeable number.

904438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11863 + ... + 11938.

It is an arithmetic number, because the mean of its divisors is an integer number (178515).

2⁹⁰⁴⁴³⁸ is an apocalyptic number.

904438 is a deficient number, since it is larger than the sum of its proper divisors (523682).

904438 is a wasteful number, since it uses less digits than its factorization.

904438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23822.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 904438 is about 951.0194530082. The cubic root of 904438 is about 96.7073761683.

The spelling of 904438 in words is "nine hundred four thousand, four hundred thirty-eight".