442397444 has 12 divisors (see below), whose sum is σ = 814942800. Its totient is φ = 209556648.

The previous prime is 442397441. The next prime is 442397453. The reversal of 442397444 is 444793244.

It is not an unprimeable number, because it can be changed into a prime (442397441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2910434 + ... + 2910585.

It is an arithmetic number, because the mean of its divisors is an integer number (67911900).

Almost surely, 2^442397444 is an apocalyptic number.

It is an amenable number.

442397444 is a deficient number, since it is larger than the sum of its proper divisors (372545356).

442397444 is a wasteful number, since it uses less digits than its factorization.

442397444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821042 (or 5821040 counting only the distinct ones).

The product of its digits is 387072, while the sum is 41.

The square root of 442397444 is about 21033.2461593545. The cubic root of 442397444 is about 761.9694097478.

The spelling of 442397444 in words is "four hundred forty-two million, three hundred ninety-seven thousand, four hundred forty-four".