9939808 has 24 divisors (see below), whose sum is σ = 20245680. Its totient is φ = 4798080.

The previous prime is 9939803. The next prime is 9939817. The reversal of 9939808 is 8089399.

9939808 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 not an unprimeable number, because it can be changed into a prime (9939803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4428 + ... + 6283.

It is an arithmetic number, because the mean of its divisors is an integer number (843570).

Almost surely, 2^9939808 is an apocalyptic number.

It is an amenable number.

9939808 is an abundant number, since it is smaller than the sum of its proper divisors (10305872).

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

9939808 is a wasteful number, since it uses less digits than its factorization.

9939808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10750 (or 10742 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 9939808 is about 3152.7461045888. The cubic root of 9939808 is about 215.0103330170.

It can be divided in two parts, 993 and 9808, that added together give a palindrome (10801).

The spelling of 9939808 in words is "nine million, nine hundred thirty-nine thousand, eight hundred eight".