398275904 has 28 divisors (see below), whose sum is σ = 851125044. Its totient is φ = 183819264.

The previous prime is 398275883. The next prime is 398275919. The reversal of 398275904 is 409572893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65286400 + 332989504 = 8080^2 + 18248^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238517 + ... + 240180.

It is an arithmetic number, because the mean of its divisors is an integer number (30397323).

Almost surely, 2^398275904 is an apocalyptic number.

It is an amenable number.

398275904 is an abundant number, since it is smaller than the sum of its proper divisors (452849140).

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

398275904 is a wasteful number, since it uses less digits than its factorization.

398275904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478722 (or 478712 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 398275904 is about 19956.8510542119. The cubic root of 398275904 is about 735.7461711347.

The spelling of 398275904 in words is "three hundred ninety-eight million, two hundred seventy-five thousand, nine hundred four".