6839689 has 2 divisors, whose sum is σ = 6839690. Its totient is φ = 6839688.

The previous prime is 6839683. The next prime is 6839713. The reversal of 6839689 is 9869386.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6801664 + 38025 = 2608^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 6839689 - 2¹¹ = 6837641 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6839683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3419844 + 3419845.

It is an arithmetic number, because the mean of its divisors is an integer number (3419845).

Almost surely, 2^6839689 is an apocalyptic number.

It is an amenable number.

6839689 is a deficient number, since it is larger than the sum of its proper divisors (1).

6839689 is an equidigital number, since it uses as much as digits as its factorization.

6839689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 49.

The square root of 6839689 is about 2615.2799085375. The cubic root of 6839689 is about 189.8215221487.

The spelling of 6839689 in words is "six million, eight hundred thirty-nine thousand, six hundred eighty-nine".