139807912 has 16 divisors (see below), whose sum is σ = 264591360. Its totient is φ = 69250224.

The previous prime is 139807903. The next prime is 139807919. The reversal of 139807912 is 219708931.

139807912 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (139807919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80808 + ... + 82519.

It is an arithmetic number, because the mean of its divisors is an integer number (16536960).

Almost surely, 2^139807912 is an apocalyptic number.

It is an amenable number.

139807912 is a deficient number, since it is larger than the sum of its proper divisors (124783448).

139807912 is a wasteful number, since it uses less digits than its factorization.

139807912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163440 (or 163436 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 139807912 is about 11824.0395804480. The cubic root of 139807912 is about 519.0118215362.

The spelling of 139807912 in words is "one hundred thirty-nine million, eight hundred seven thousand, nine hundred twelve".