839799997938 has 24 divisors (see below), whose sum is σ = 1984981813776. Its totient is φ = 254484847800.

The previous prime is 839799997873. The next prime is 839799998029.

839799997938 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2120706868 + ... + 2120707263.

It is an arithmetic number, because the mean of its divisors is an integer number (82707575574).

Almost surely, 2^839799997938 is an apocalyptic number.

839799997938 is an abundant number, since it is smaller than the sum of its proper divisors (1145181815838).

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

839799997938 is a wasteful number, since it uses less digits than its factorization.

839799997938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241414150 (or 4241414147 counting only the distinct ones).

The product of its digits is 14999390784, while the sum is 90.

The spelling of 839799997938 in words is "eight hundred thirty-nine billion, seven hundred ninety-nine million, nine hundred ninety-seven thousand, nine hundred thirty-eight".