442544660 has 24 divisors (see below), whose sum is σ = 931370496. Its totient is φ = 176631840.

The previous prime is 442544659. The next prime is 442544671. The reversal of 442544660 is 66445244.

It is a self number, because there is not a number n which added to its sum of digits gives 442544660.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14636 + ... + 33155.

It is an arithmetic number, because the mean of its divisors is an integer number (38807104).

Almost surely, 2^442544660 is an apocalyptic number.

It is an amenable number.

442544660 is an abundant number, since it is smaller than the sum of its proper divisors (488825836).

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

442544660 is a wasteful number, since it uses less digits than its factorization.

442544660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48263 (or 48261 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 35.

The square root of 442544660 is about 21036.7454707234. The cubic root of 442544660 is about 762.0539202182.

The spelling of 442544660 in words is "four hundred forty-two million, five hundred forty-four thousand, six hundred sixty".