9939902 has 32 divisors (see below), whose sum is σ = 18094080. Its totient is φ = 4004640.

The previous prime is 9939901. The next prime is 9939911. The reversal of 9939902 is 2099399.

It is a self number, because there is not a number n which added to its sum of digits gives 9939902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9939901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15749 + ... + 16367.

It is an arithmetic number, because the mean of its divisors is an integer number (565440).

Almost surely, 2^9939902 is an apocalyptic number.

9939902 is a deficient number, since it is larger than the sum of its proper divisors (8154178).

9939902 is a wasteful number, since it uses less digits than its factorization.

9939902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its (nonzero) digits is 39366, while the sum is 41.

The square root of 9939902 is about 3152.7610121923. The cubic root of 9939902 is about 215.0110107936.

The spelling of 9939902 in words is "nine million, nine hundred thirty-nine thousand, nine hundred two".