139915172 has 24 divisors (see below), whose sum is σ = 248047800. Its totient is φ = 69050880.

The previous prime is 139915159. The next prime is 139915189. The reversal of 139915172 is 271519931.

139915172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5494336 + 134420836 = 2344^2 + 11594^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107228 + ... + 108524.

It is an arithmetic number, because the mean of its divisors is an integer number (10335325).

Almost surely, 2^139915172 is an apocalyptic number.

It is an amenable number.

139915172 is a deficient number, since it is larger than the sum of its proper divisors (108132628).

139915172 is a wasteful number, since it uses less digits than its factorization.

139915172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631 (or 1629 counting only the distinct ones).

The product of its digits is 17010, while the sum is 38.

The square root of 139915172 is about 11828.5743857829. The cubic root of 139915172 is about 519.1445154514.

The spelling of 139915172 in words is "one hundred thirty-nine million, nine hundred fifteen thousand, one hundred seventy-two".