6831172939 has 2 divisors, whose sum is σ = 6831172940. Its totient is φ = 6831172938.

The previous prime is 6831172921. The next prime is 6831172967. The reversal of 6831172939 is 9392711386.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6831172939 - 2⁹ = 6831172427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6831172892 and 6831172901.

It is not a weakly prime, because it can be changed into another prime (6831172979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3415586469 + 3415586470.

It is an arithmetic number, because the mean of its divisors is an integer number (3415586470).

Almost surely, 2^6831172939 is an apocalyptic number.

6831172939 is a deficient number, since it is larger than the sum of its proper divisors (1).

6831172939 is an equidigital number, since it uses as much as digits as its factorization.

6831172939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 49.

The square root of 6831172939 is about 82650.9100917830. The cubic root of 6831172939 is about 1897.4270750099.

The spelling of 6831172939 in words is "six billion, eight hundred thirty-one million, one hundred seventy-two thousand, nine hundred thirty-nine".