398826134240 has 48 divisors (see below), whose sum is σ = 950871065760. Its totient is φ = 158066864640.

The previous prime is 398826134219. The next prime is 398826134269. The reversal of 398826134240 is 42431628893.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11416796 + ... + 11451675.

It is an arithmetic number, because the mean of its divisors is an integer number (19809813870).

Almost surely, 2^398826134240 is an apocalyptic number.

It is an amenable number.

398826134240 is an abundant number, since it is smaller than the sum of its proper divisors (552044931520).

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

398826134240 is a wasteful number, since it uses less digits than its factorization.

398826134240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22868595 (or 22868587 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 398826134240 in words is "three hundred ninety-eight billion, eight hundred twenty-six million, one hundred thirty-four thousand, two hundred forty".