398304975 has 24 divisors (see below), whose sum is σ = 660461200. Its totient is φ = 211806720.

The previous prime is 398304971. The next prime is 398304979. The reversal of 398304975 is 579403893.

It is an interprime number because it is at equal distance from previous prime (398304971) and next prime (398304979).

It is not a de Polignac number, because 398304975 - 2² = 398304971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398304971) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18567 + ... + 33783.

Almost surely, 2^398304975 is an apocalyptic number.

398304975 is a deficient number, since it is larger than the sum of its proper divisors (262156225).

398304975 is a wasteful number, since it uses less digits than its factorization.

398304975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15579 (or 15574 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 48.

The square root of 398304975 is about 19957.5793872904. The cubic root of 398304975 is about 735.7640719218.

The spelling of 398304975 in words is "three hundred ninety-eight million, three hundred four thousand, nine hundred seventy-five".