904442 has 24 divisors (see below), whose sum is σ = 1723680. Its totient is φ = 351960.

The previous prime is 904441. The next prime is 904459. The reversal of 904442 is 244409.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (904441) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 659 + ... + 1497.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2⁹⁰⁴⁴⁴² is an apocalyptic number.

904442 is a deficient number, since it is larger than the sum of its proper divisors (819238).

904442 is a wasteful number, since it uses less digits than its factorization.

904442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 859 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 904442 is about 951.0215560123. The cubic root of 904442 is about 96.7075187353.

The spelling of 904442 in words is "nine hundred four thousand, four hundred forty-two".