442445556 has 48 divisors (see below), whose sum is σ = 1211751296. Its totient is φ = 122995584.

The previous prime is 442445539. The next prime is 442445561. The reversal of 442445556 is 655544244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68071 + ... + 74286.

Almost surely, 2^442445556 is an apocalyptic number.

It is an amenable number.

442445556 is an abundant number, since it is smaller than the sum of its proper divisors (769305740).

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

442445556 is a wasteful number, since it uses less digits than its factorization.

442445556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142408 (or 142406 counting only the distinct ones).

The product of its digits is 384000, while the sum is 39.

The square root of 442445556 is about 21034.3898414002. The cubic root of 442445556 is about 761.9970308714.

The spelling of 442445556 in words is "four hundred forty-two million, four hundred forty-five thousand, five hundred fifty-six".