904478 has 4 divisors (see below), whose sum is σ = 1356720. Its totient is φ = 452238.

The previous prime is 904459. The next prime is 904483. The reversal of 904478 is 874409.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226118 + ... + 226121.

It is an arithmetic number, because the mean of its divisors is an integer number (339180).

2⁹⁰⁴⁴⁷⁸ is an apocalyptic number.

904478 is a deficient number, since it is larger than the sum of its proper divisors (452242).

904478 is a wasteful number, since it uses less digits than its factorization.

904478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452241.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 904478 is about 951.0404828397. The cubic root of 904478 is about 96.7088018190.

The spelling of 904478 in words is "nine hundred four thousand, four hundred seventy-eight".