9981908 has 12 divisors (see below), whose sum is σ = 18228000. Its totient is φ = 4773912.

The previous prime is 9981899. The next prime is 9981911. The reversal of 9981908 is 8091899.

9981908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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, 54158 + ... + 54341.

It is an arithmetic number, because the mean of its divisors is an integer number (1519000).

Almost surely, 2^9981908 is an apocalyptic number.

It is an amenable number.

9981908 is a deficient number, since it is larger than the sum of its proper divisors (8246092).

9981908 is a wasteful number, since it uses less digits than its factorization.

9981908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108526 (or 108524 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 44.

The square root of 9981908 is about 3159.4157687775. The cubic root of 9981908 is about 215.3134637951.

The spelling of 9981908 in words is "nine million, nine hundred eighty-one thousand, nine hundred eight".