139940608 has 18 divisors (see below), whose sum is σ = 279335084. Its totient is φ = 69970176.

The previous prime is 139940597. The next prime is 139940653. The reversal of 139940608 is 806049931.

139940608 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273066 + ... + 273577.

Almost surely, 2^139940608 is an apocalyptic number.

It is an amenable number.

139940608 is a deficient number, since it is larger than the sum of its proper divisors (139394476).

139940608 is an frugal number, since it uses more digits than its factorization.

139940608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546659 (or 546645 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 139940608 is about 11829.6495298889. The cubic root of 139940608 is about 519.1759729876.

The spelling of 139940608 in words is "one hundred thirty-nine million, nine hundred forty thousand, six hundred eight".