398831367742 has 32 divisors (see below), whose sum is σ = 631800000000. Its totient is φ = 188301226176.

The previous prime is 398831367719. The next prime is 398831367743. The reversal of 398831367742 is 247763138893.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398831367743) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 15327259 + ... + 15353257.

It is an arithmetic number, because the mean of its divisors is an integer number (19743750000).

Almost surely, 2^398831367742 is an apocalyptic number.

398831367742 is a deficient number, since it is larger than the sum of its proper divisors (232968632258).

398831367742 is a wasteful number, since it uses less digits than its factorization.

398831367742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27328.

The product of its digits is 36578304, while the sum is 61.

The spelling of 398831367742 in words is "three hundred ninety-eight billion, eight hundred thirty-one million, three hundred sixty-seven thousand, seven hundred forty-two".