8139908 has 12 divisors (see below), whose sum is σ = 16279872. Its totient is φ = 3488520.

The previous prime is 8139871. The next prime is 8139917. The reversal of 8139908 is 8099318.

8139908 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145328 + ... + 145383.

It is an arithmetic number, because the mean of its divisors is an integer number (1356656).

Almost surely, 2^8139908 is an apocalyptic number.

It is an amenable number.

8139908 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8139908 is a wasteful number, since it uses less digits than its factorization.

8139908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290722 (or 290720 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 8139908 is about 2853.0524005002. The cubic root of 8139908 is about 201.1591686606.

The spelling of 8139908 in words is "eight million, one hundred thirty-nine thousand, nine hundred eight".