839347138 has 32 divisors (see below), whose sum is σ = 1464091776. Its totient is φ = 353455488.

The previous prime is 839347127. The next prime is 839347139. The reversal of 839347138 is 831743938.

It is a happy number.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (839347139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298045 + ... + 300847.

It is an arithmetic number, because the mean of its divisors is an integer number (45752868).

Almost surely, 2^839347138 is an apocalyptic number.

839347138 is a deficient number, since it is larger than the sum of its proper divisors (624744638).

839347138 is a wasteful number, since it uses less digits than its factorization.

839347138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3178.

The product of its digits is 435456, while the sum is 46.

The square root of 839347138 is about 28971.4883635619. The cubic root of 839347138 is about 943.2942880145.

The spelling of 839347138 in words is "eight hundred thirty-nine million, three hundred forty-seven thousand, one hundred thirty-eight".