398193710870 has 24 divisors (see below), whose sum is σ = 756457754544. Its totient is φ = 150894457488.

The previous prime is 398193710867. The next prime is 398193710911. The reversal of 398193710870 is 78017391893.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 55147874 + ... + 55155093.

It is an arithmetic number, because the mean of its divisors is an integer number (31519073106).

Almost surely, 2^398193710870 is an apocalyptic number.

398193710870 is a deficient number, since it is larger than the sum of its proper divisors (358264043674).

398193710870 is a wasteful number, since it uses less digits than its factorization.

398193710870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110303012 (or 110302993 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 56.

The spelling of 398193710870 in words is "three hundred ninety-eight billion, one hundred ninety-three million, seven hundred ten thousand, eight hundred seventy".