398878098346 has 72 divisors (see below), whose sum is σ = 772041744684. Its totient is φ = 153948936960.

The previous prime is 398878098331. The next prime is 398878098371. The reversal of 398878098346 is 643890878893.

It can be written as a sum of positive squares in 6 ways, for example, as 433097721 + 398445000625 = 20811^2 + 631225^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 385336 + ... + 972748.

Almost surely, 2^398878098346 is an apocalyptic number.

398878098346 is a deficient number, since it is larger than the sum of its proper divisors (373163646338).

398878098346 is a wasteful number, since it uses less digits than its factorization.

398878098346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587496 (or 587476 counting only the distinct ones).

The product of its (nonzero) digits is 501645312, while the sum is 73.

The spelling of 398878098346 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, ninety-eight thousand, three hundred forty-six".