6779839 has 8 divisors (see below), whose sum is σ = 7418880. Its totient is φ = 6144600.

The previous prime is 6779837. The next prime is 6779849. The reversal of 6779839 is 9389776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6779839 - 2¹ = 6779837 is a prime.

It is a Duffinian number.

6779839 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 6779792 and 6779801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779833) 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 7 ways as a sum of consecutive naturals, for example, 3874 + ... + 5344.

It is an arithmetic number, because the mean of its divisors is an integer number (927360).

Almost surely, 2^6779839 is an apocalyptic number.

6779839 is a deficient number, since it is larger than the sum of its proper divisors (639041).

6779839 is a wasteful number, since it uses less digits than its factorization.

6779839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901.

The product of its digits is 571536, while the sum is 49.

The square root of 6779839 is about 2603.8123972360. The cubic root of 6779839 is about 189.2662280234.

The spelling of 6779839 in words is "six million, seven hundred seventy-nine thousand, eight hundred thirty-nine".