398809072 has 10 divisors (see below), whose sum is σ = 772692608. Its totient is φ = 199404528.

The previous prime is 398809067. The next prime is 398809093. The reversal of 398809072 is 270908893.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 12462768 + ... + 12462799.

Almost surely, 2^398809072 is an apocalyptic number.

It is an amenable number.

398809072 is a deficient number, since it is larger than the sum of its proper divisors (373883536).

398809072 is a wasteful number, since it uses less digits than its factorization.

398809072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24925575 (or 24925569 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 398809072 is about 19970.2046058622. The cubic root of 398809072 is about 736.0743367733.

The spelling of 398809072 in words is "three hundred ninety-eight million, eight hundred nine thousand, seventy-two".