831149839 has 12 divisors (see below), whose sum is σ = 950837944. Its totient is φ = 722081664.

The previous prime is 831149801. The next prime is 831149843. The reversal of 831149839 is 938941138.

It is a happy number.

831149839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 831149839 - 2⁹ = 831149327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831149899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106857 + ... + 114370.

Almost surely, 2^831149839 is an apocalyptic number.

831149839 is a deficient number, since it is larger than the sum of its proper divisors (119688105).

831149839 is a wasteful number, since it uses less digits than its factorization.

831149839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221274 (or 221257 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 831149839 is about 28829.6694223156. The cubic root of 831149839 is about 940.2134112552.

The spelling of 831149839 in words is "eight hundred thirty-one million, one hundred forty-nine thousand, eight hundred thirty-nine".