139002879 has 16 divisors (see below), whose sum is σ = 198403200. Its totient is φ = 86301216.

The previous prime is 139002859. The next prime is 139002881. The reversal of 139002879 is 978200931.

139002879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139002879 - 2¹¹ = 139000831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139002859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17304 + ... + 24029.

It is an arithmetic number, because the mean of its divisors is an integer number (12400200).

Almost surely, 2^139002879 is an apocalyptic number.

139002879 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

139002879 is a deficient number, since it is larger than the sum of its proper divisors (59400321).

139002879 is a wasteful number, since it uses less digits than its factorization.

139002879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41414.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 139002879 is about 11789.9482187158. The cubic root of 139002879 is about 518.0137230951.

The spelling of 139002879 in words is "one hundred thirty-nine million, two thousand, eight hundred seventy-nine".