444931668 has 36 divisors (see below), whose sum is σ = 1126970208. Its totient is φ = 148009680.

The previous prime is 444931609. The next prime is 444931679. The reversal of 444931668 is 866139444.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5823 + ... + 30393.

It is an arithmetic number, because the mean of its divisors is an integer number (31304728).

Almost surely, 2^444931668 is an apocalyptic number.

It is an amenable number.

444931668 is an abundant number, since it is smaller than the sum of its proper divisors (682038540).

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

444931668 is a wasteful number, since it uses less digits than its factorization.

444931668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25084 (or 25079 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 444931668 is about 21093.4034238195. The cubic root of 444931668 is about 763.4215924001.

The spelling of 444931668 in words is "four hundred forty-four million, nine hundred thirty-one thousand, six hundred sixty-eight".