9989908 has 6 divisors (see below), whose sum is σ = 17482346. Its totient is φ = 4994952.

The previous prime is 9989899. The next prime is 9989921. The reversal of 9989908 is 8099899.

It can be written as a sum of positive squares in only one way, i.e., 9072144 + 917764 = 3012^2 + 958^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1248735 + ... + 1248742.

Almost surely, 2^9989908 is an apocalyptic number.

It is an amenable number.

9989908 is a deficient number, since it is larger than the sum of its proper divisors (7492438).

9989908 is a wasteful number, since it uses less digits than its factorization.

9989908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497481 (or 2497479 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 9989908 is about 3160.6815720664. The cubic root of 9989908 is about 215.3709694259.

The spelling of 9989908 in words is "nine million, nine hundred eighty-nine thousand, nine hundred eight".