398393289438 has 16 divisors (see below), whose sum is σ = 796793276160. Its totient is φ = 132796646936.

The previous prime is 398393289419. The next prime is 398393289467. The reversal of 398393289438 is 834982393893.

398393289438 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838603 + ... + 1224761.

It is an arithmetic number, because the mean of its divisors is an integer number (49799579760).

Almost surely, 2^398393289438 is an apocalyptic number.

398393289438 is an abundant number, since it is smaller than the sum of its proper divisors (398399986722).

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

398393289438 is a wasteful number, since it uses less digits than its factorization.

398393289438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558111.

The product of its digits is 241864704, while the sum is 69.

The spelling of 398393289438 in words is "three hundred ninety-eight billion, three hundred ninety-three million, two hundred eighty-nine thousand, four hundred thirty-eight".