139435908 has 24 divisors (see below), whose sum is σ = 342474720. Its totient is φ = 44032320.

The previous prime is 139435903. The next prime is 139435931. The reversal of 139435908 is 809534931.

139435908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139435908.

It is not an unprimeable number, because it can be changed into a prime (139435903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305553 + ... + 306008.

It is an arithmetic number, because the mean of its divisors is an integer number (14269780).

Almost surely, 2^139435908 is an apocalyptic number.

It is an amenable number.

139435908 is an abundant number, since it is smaller than the sum of its proper divisors (203038812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139435908 is a wasteful number, since it uses less digits than its factorization.

139435908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611587 (or 611585 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 139435908 is about 11808.2982685906. The cubic root of 139435908 is about 518.5510799131.

The spelling of 139435908 in words is "one hundred thirty-nine million, four hundred thirty-five thousand, nine hundred eight".