398242444708 has 12 divisors (see below), whose sum is σ = 700535286220. Its totient is φ = 198089505792.

The previous prime is 398242444693. The next prime is 398242444759. The reversal of 398242444708 is 807444242893.

It can be written as a sum of positive squares in 2 ways, for example, as 282065085604 + 116177359104 = 531098^2 + 340848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257928273 + ... + 257929816.

Almost surely, 2^398242444708 is an apocalyptic number.

It is an amenable number.

398242444708 is a deficient number, since it is larger than the sum of its proper divisors (302292841512).

398242444708 is a wasteful number, since it uses less digits than its factorization.

398242444708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515858286 (or 515858284 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 55.

The spelling of 398242444708 in words is "three hundred ninety-eight billion, two hundred forty-two million, four hundred forty-four thousand, seven hundred eight".