442660844 has 24 divisors (see below), whose sum is σ = 779782080. Its totient is φ = 219872016.

The previous prime is 442660817. The next prime is 442660853. The reversal of 442660844 is 448066244.

It is a junction number, because it is equal to n+sod(n) for n = 442660798 and 442660807.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 671387 + ... + 672045.

It is an arithmetic number, because the mean of its divisors is an integer number (32490920).

Almost surely, 2^442660844 is an apocalyptic number.

It is an amenable number.

442660844 is a deficient number, since it is larger than the sum of its proper divisors (337121236).

442660844 is a wasteful number, since it uses less digits than its factorization.

442660844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 38.

The square root of 442660844 is about 21039.5067432675. The cubic root of 442660844 is about 762.1206033003.

The spelling of 442660844 in words is "four hundred forty-two million, six hundred sixty thousand, eight hundred forty-four".