442005904 has 20 divisors (see below), whose sum is σ = 893621376. Its totient is φ = 211393952.

The previous prime is 442005887. The next prime is 442005913. The reversal of 442005904 is 409500244.

It is an unprimeable 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, 600184 + ... + 600919.

Almost surely, 2^442005904 is an apocalyptic number.

It is an amenable number.

442005904 is an abundant number, since it is smaller than the sum of its proper divisors (451615472).

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

442005904 is a wasteful number, since it uses less digits than its factorization.

442005904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201134 (or 1201128 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 442005904 is about 21023.9364534808. The cubic root of 442005904 is about 761.7445519381.

The spelling of 442005904 in words is "four hundred forty-two million, five thousand, nine hundred four".