831239379 has 12 divisors (see below), whose sum is σ = 1263873000. Its totient is φ = 524993184.

The previous prime is 831239369. The next prime is 831239401. The reversal of 831239379 is 973932138.

It is not a de Polignac number, because 831239379 - 2⁵ = 831239347 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (831239309) 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, 2430354 + ... + 2430695.

It is an arithmetic number, because the mean of its divisors is an integer number (105322750).

Almost surely, 2^831239379 is an apocalyptic number.

831239379 is a deficient number, since it is larger than the sum of its proper divisors (432633621).

831239379 is a wasteful number, since it uses less digits than its factorization.

831239379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4861074 (or 4861071 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 831239379 is about 28831.2222945889. Note that the first 4 decimals coincide. The cubic root of 831239379 is about 940.2471731923.

The spelling of 831239379 in words is "eight hundred thirty-one million, two hundred thirty-nine thousand, three hundred seventy-nine".