6805939 has 4 divisors (see below), whose sum is σ = 7778224. Its totient is φ = 5833656.

The previous prime is 6805937. The next prime is 6805943. The reversal of 6805939 is 9395086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6805939 - 2¹ = 6805937 is a prime.

It is a Duffinian number.

6805939 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (6805937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486132 + ... + 486145.

It is an arithmetic number, because the mean of its divisors is an integer number (1944556).

Almost surely, 2^6805939 is an apocalyptic number.

6805939 is a deficient number, since it is larger than the sum of its proper divisors (972285).

6805939 is an equidigital number, since it uses as much as digits as its factorization.

6805939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972284.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 6805939 is about 2608.8194648155. The cubic root of 6805939 is about 189.5087865452.

It can be divided in two parts, 6805 and 939, that added together give a square (7744 = 88²).

The spelling of 6805939 in words is "six million, eight hundred five thousand, nine hundred thirty-nine".