6779439 has 12 divisors (see below), whose sum is σ = 9819576. Its totient is φ = 4507152.

The previous prime is 6779393. The next prime is 6779441. The reversal of 6779439 is 9349776.

6779439 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 6779439 - 2⁸ = 6779183 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 6779394 and 6779403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6779449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3397 + ... + 5009.

It is an arithmetic number, because the mean of its divisors is an integer number (818298).

Almost surely, 2^6779439 is an apocalyptic number.

6779439 is a deficient number, since it is larger than the sum of its proper divisors (3040137).

6779439 is a wasteful number, since it uses less digits than its factorization.

6779439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086 (or 2083 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 6779439 is about 2603.7355856538. The cubic root of 6779439 is about 189.2625058121.

The spelling of 6779439 in words is "six million, seven hundred seventy-nine thousand, four hundred thirty-nine".