442979812 has 24 divisors (see below), whose sum is σ = 895436640. Its totient is φ = 189509760.

The previous prime is 442979809. The next prime is 442979819. The reversal of 442979812 is 218979244.

It is a super-2 number, since 2×442979812² = 392462227679110688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (442979819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295362 + ... + 296857.

It is an arithmetic number, because the mean of its divisors is an integer number (37309860).

Almost surely, 2^442979812 is an apocalyptic number.

It is an amenable number.

442979812 is an abundant number, since it is smaller than the sum of its proper divisors (452456828).

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

442979812 is a wasteful number, since it uses less digits than its factorization.

442979812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592251 (or 592249 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 442979812 is about 21047.0855939724. The cubic root of 442979812 is about 762.3036130265.

The spelling of 442979812 in words is "four hundred forty-two million, nine hundred seventy-nine thousand, eight hundred twelve".