398185006 has 8 divisors (see below), whose sum is σ = 599602320. Its totient is φ = 198317568.

The previous prime is 398184973. The next prime is 398185027. The reversal of 398185006 is 600581893.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 398185006.

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, 386826 + ... + 387853.

It is an arithmetic number, because the mean of its divisors is an integer number (74950290).

Almost surely, 2^398185006 is an apocalyptic number.

398185006 is a deficient number, since it is larger than the sum of its proper divisors (201417314).

398185006 is a wasteful number, since it uses less digits than its factorization.

398185006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774938.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 398185006 is about 19954.5735609659. The cubic root of 398185006 is about 735.6901940735.

The spelling of 398185006 in words is "three hundred ninety-eight million, one hundred eighty-five thousand, six".