320398444 has 24 divisors (see below), whose sum is σ = 594137600. Its totient is φ = 150757200.

The previous prime is 320398399. The next prime is 320398459. The reversal of 320398444 is 444893023.

It is a super-2 number, since 2×320398444² = 205310325835242272, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2484 + ... + 25435.

Almost surely, 2^320398444 is an apocalyptic number.

It is an amenable number.

320398444 is a deficient number, since it is larger than the sum of its proper divisors (273739156).

320398444 is a wasteful number, since it uses less digits than its factorization.

320398444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28093 (or 28091 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 320398444 is about 17899.6772037934. The cubic root of 320398444 is about 684.2741482826.

The spelling of 320398444 in words is "three hundred twenty million, three hundred ninety-eight thousand, four hundred forty-four".