442063664 has 20 divisors (see below), whose sum is σ = 978855504. Its totient is φ = 189455808.

The previous prime is 442063663. The next prime is 442063667. The reversal of 442063664 is 466360244.

It is not an unprimeable number, because it can be changed into a prime (442063663) 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, 1973387 + ... + 1973610.

Almost surely, 2^442063664 is an apocalyptic number.

It is an amenable number.

442063664 is an abundant number, since it is smaller than the sum of its proper divisors (536791840).

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

442063664 is a wasteful number, since it uses less digits than its factorization.

442063664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947012 (or 3947006 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 442063664 is about 21025.3100809477. The cubic root of 442063664 is about 761.7777313207. Note that the first 4 decimals are identical.

The spelling of 442063664 in words is "four hundred forty-two million, sixty-three thousand, six hundred sixty-four".