398245356870 has 64 divisors (see below), whose sum is σ = 962410161600. Its totient is φ = 105463369728.

The previous prime is 398245356869. The next prime is 398245356907. The reversal of 398245356870 is 78653542893.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35830434 + ... + 35841546.

It is an arithmetic number, because the mean of its divisors is an integer number (15037658775).

Almost surely, 2^398245356870 is an apocalyptic number.

398245356870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

398245356870 is an abundant number, since it is smaller than the sum of its proper divisors (564164804730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

398245356870 is a wasteful number, since it uses less digits than its factorization.

398245356870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19289.

The product of its (nonzero) digits is 43545600, while the sum is 60.

The spelling of 398245356870 in words is "three hundred ninety-eight billion, two hundred forty-five million, three hundred fifty-six thousand, eight hundred seventy".