442604394 has 12 divisors (see below), whose sum is σ = 958976226. Its totient is φ = 147534792.

The previous prime is 442604381. The next prime is 442604413. The reversal of 442604394 is 493406244.

442604394 is a `hidden beast` number, since 4 + 4 + 260 + 4 + 394 = 666.

It can be written as a sum of positive squares in only one way, i.e., 441630225 + 974169 = 21015^2 + 987^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12294549 + ... + 12294584.

Almost surely, 2^442604394 is an apocalyptic number.

442604394 is an abundant number, since it is smaller than the sum of its proper divisors (516371832).

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

442604394 is a wasteful number, since it uses less digits than its factorization.

442604394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24589141 (or 24589138 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 36.

The square root of 442604394 is about 21038.1651766498. The cubic root of 442604394 is about 762.0882056324.

The spelling of 442604394 in words is "four hundred forty-two million, six hundred four thousand, three hundred ninety-four".