442884668 has 12 divisors (see below), whose sum is σ = 779690352. Its totient is φ = 220116000.

The previous prime is 442884643. The next prime is 442884679. The reversal of 442884668 is 866488244.

It is a super-2 number, since 2×442884668² = 392293658298940448, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330833 + ... + 332168.

It is an arithmetic number, because the mean of its divisors is an integer number (64974196).

Almost surely, 2^442884668 is an apocalyptic number.

It is an amenable number.

442884668 is a deficient number, since it is larger than the sum of its proper divisors (336805684).

442884668 is a wasteful number, since it uses less digits than its factorization.

442884668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663172 (or 663170 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 50.

The square root of 442884668 is about 21044.8252071620. The cubic root of 442884668 is about 762.2490328055.

The spelling of 442884668 in words is "four hundred forty-two million, eight hundred eighty-four thousand, six hundred sixty-eight".