398131198 has 8 divisors (see below), whose sum is σ = 617789880. Its totient is φ = 192201240.

The previous prime is 398131189. The next prime is 398131229. The reversal of 398131198 is 891131893.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 3432108 + ... + 3432223.

It is an arithmetic number, because the mean of its divisors is an integer number (77223735).

Almost surely, 2^398131198 is an apocalyptic number.

398131198 is a deficient number, since it is larger than the sum of its proper divisors (219658682).

398131198 is a wasteful number, since it uses less digits than its factorization.

398131198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6864362.

The product of its digits is 46656, while the sum is 43.

The square root of 398131198 is about 19953.2252530763. The cubic root of 398131198 is about 735.6570538660.

The spelling of 398131198 in words is "three hundred ninety-eight million, one hundred thirty-one thousand, one hundred ninety-eight".