398245356868 has 48 divisors (see below), whose sum is σ = 729835666560. Its totient is φ = 189783627264.

The previous prime is 398245356863. The next prime is 398245356869. The reversal of 398245356868 is 868653542893.

It is not an unprimeable number, because it can be changed into a prime (398245356863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71585455 + ... + 71591017.

It is an arithmetic number, because the mean of its divisors is an integer number (15204909720).

Almost surely, 2^398245356868 is an apocalyptic number.

It is an amenable number.

398245356868 is a deficient number, since it is larger than the sum of its proper divisors (331590309692).

398245356868 is a wasteful number, since it uses less digits than its factorization.

398245356868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8236 (or 8234 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 67.

The spelling of 398245356868 in words is "three hundred ninety-eight billion, two hundred forty-five million, three hundred fifty-six thousand, eight hundred sixty-eight".