8139879 has 16 divisors (see below), whose sum is σ = 13155840. Its totient is φ = 4933080.

The previous prime is 8139871. The next prime is 8139917. The reversal of 8139879 is 9789318.

8139879 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 8139879 - 2³ = 8139871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8139871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13407 + ... + 14000.

It is an arithmetic number, because the mean of its divisors is an integer number (822240).

Almost surely, 2^8139879 is an apocalyptic number.

8139879 is a deficient number, since it is larger than the sum of its proper divisors (5015961).

8139879 is a wasteful number, since it uses less digits than its factorization.

8139879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27427 (or 27421 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 8139879 is about 2853.0473182196. The cubic root of 8139879 is about 201.1589297708.

The spelling of 8139879 in words is "eight million, one hundred thirty-nine thousand, eight hundred seventy-nine".