6839855 has 16 divisors (see below), whose sum is σ = 9345024. Its totient is φ = 4757280.

The previous prime is 6839851. The next prime is 6839873. The reversal of 6839855 is 5589386.

It is not a de Polignac number, because 6839855 - 2² = 6839851 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 (6839851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1439 + ... + 3968.

It is an arithmetic number, because the mean of its divisors is an integer number (584064).

Almost surely, 2^6839855 is an apocalyptic number.

6839855 is a deficient number, since it is larger than the sum of its proper divisors (2505169).

6839855 is a wasteful number, since it uses less digits than its factorization.

6839855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446.

The product of its digits is 259200, while the sum is 44.

The square root of 6839855 is about 2615.3116449096. The cubic root of 6839855 is about 189.8230577994.

The spelling of 6839855 in words is "six million, eight hundred thirty-nine thousand, eight hundred fifty-five".