6879139 has 8 divisors (see below), whose sum is σ = 7207200. Its totient is φ = 6553536.

The previous prime is 6879133. The next prime is 6879163. The reversal of 6879139 is 9319786.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6879139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6879095 and 6879104.

It is not an unprimeable number, because it can be changed into a prime (6879133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7599 + ... + 8455.

It is an arithmetic number, because the mean of its divisors is an integer number (900900).

Almost surely, 2^6879139 is an apocalyptic number.

6879139 is a deficient number, since it is larger than the sum of its proper divisors (328061).

6879139 is a wasteful number, since it uses less digits than its factorization.

6879139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229.

The product of its digits is 81648, while the sum is 43.

The square root of 6879139 is about 2622.8112779992. The cubic root of 6879139 is about 190.1857739775.

The spelling of 6879139 in words is "six million, eight hundred seventy-nine thousand, one hundred thirty-nine".