6938879 has 4 divisors (see below), whose sum is σ = 6946440. Its totient is φ = 6931320.

The previous prime is 6938861. The next prime is 6938891. The reversal of 6938879 is 9788396.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6938879 - 2⁸ = 6938623 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 (6938809) 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, 2177 + ... + 4314.

It is an arithmetic number, because the mean of its divisors is an integer number (1736610).

Almost surely, 2^6938879 is an apocalyptic number.

6938879 is a deficient number, since it is larger than the sum of its proper divisors (7561).

6938879 is a wasteful number, since it uses less digits than its factorization.

6938879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560.

The product of its digits is 653184, while the sum is 50.

The square root of 6938879 is about 2634.1752029810. The cubic root of 6938879 is about 190.7347267227.

The spelling of 6938879 in words is "six million, nine hundred thirty-eight thousand, eight hundred seventy-nine".