6847839 has 6 divisors (see below), whose sum is σ = 9891336. Its totient is φ = 4565220.

The previous prime is 6847837. The next prime is 6847843. The reversal of 6847839 is 9387486.

It is a happy number.

6847839 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6847839 - 2¹ = 6847837 is a prime.

6847839 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6847794 and 6847803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6847831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380427 + ... + 380444.

It is an arithmetic number, because the mean of its divisors is an integer number (1648556).

Almost surely, 2^6847839 is an apocalyptic number.

6847839 is a deficient number, since it is larger than the sum of its proper divisors (3043497).

6847839 is a wasteful number, since it uses less digits than its factorization.

6847839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760877 (or 760874 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 6847839 is about 2616.8375952665. The cubic root of 6847839 is about 189.8968877265.

The spelling of 6847839 in words is "six million, eight hundred forty-seven thousand, eight hundred thirty-nine".