6839390329 has 4 divisors (see below), whose sum is σ = 6839557540. Its totient is φ = 6839223120.

The previous prime is 6839390323. The next prime is 6839390417. The reversal of 6839390329 is 9230939386.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1099055104 + 5740335225 = 33152^2 + 75765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6839390329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6839390323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23407 + ... + 119275.

It is an arithmetic number, because the mean of its divisors is an integer number (1709889385).

Almost surely, 2^6839390329 is an apocalyptic number.

It is an amenable number.

6839390329 is a deficient number, since it is larger than the sum of its proper divisors (167211).

6839390329 is an equidigital number, since it uses as much as digits as its factorization.

6839390329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167210.

The product of its (nonzero) digits is 1889568, while the sum is 52.

The square root of 6839390329 is about 82700.6065818141. The cubic root of 6839390329 is about 1898.1875910845.

The spelling of 6839390329 in words is "six billion, eight hundred thirty-nine million, three hundred ninety thousand, three hundred twenty-nine".