398279258 has 24 divisors (see below), whose sum is σ = 667794816. Its totient is φ = 177886800.

The previous prime is 398279237. The next prime is 398279303. The reversal of 398279258 is 852972893.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8528 + ... + 29483.

It is an arithmetic number, because the mean of its divisors is an integer number (27824784).

Almost surely, 2^398279258 is an apocalyptic number.

398279258 is a deficient number, since it is larger than the sum of its proper divisors (269515558).

398279258 is a wasteful number, since it uses less digits than its factorization.

398279258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38070 (or 38057 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 53.

The square root of 398279258 is about 19956.9350853281. The cubic root of 398279258 is about 735.7482364414.

The spelling of 398279258 in words is "three hundred ninety-eight million, two hundred seventy-nine thousand, two hundred fifty-eight".