398047358878 has 32 divisors (see below), whose sum is σ = 655295743872. Its totient is φ = 180202713600.

The previous prime is 398047358869. The next prime is 398047358897. The reversal of 398047358878 is 878853740893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5810043 + ... + 5878153.

It is an arithmetic number, because the mean of its divisors is an integer number (20477991996).

Almost surely, 2^398047358878 is an apocalyptic number.

398047358878 is a deficient number, since it is larger than the sum of its proper divisors (257248384994).

398047358878 is a wasteful number, since it uses less digits than its factorization.

398047358878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72420.

The product of its (nonzero) digits is 325140480, while the sum is 70.

The spelling of 398047358878 in words is "three hundred ninety-eight billion, forty-seven million, three hundred fifty-eight thousand, eight hundred seventy-eight".