9889569902 has 16 divisors (see below), whose sum is σ = 16090062912. Its totient is φ = 4540404480.

The previous prime is 9889569857. The next prime is 9889569961. The reversal of 9889569902 is 2099659889.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3545798 + ... + 3548585.

It is an arithmetic number, because the mean of its divisors is an integer number (1005628932).

Almost surely, 2^9889569902 is an apocalyptic number.

9889569902 is a deficient number, since it is larger than the sum of its proper divisors (6200493010).

9889569902 is a wasteful number, since it uses less digits than its factorization.

9889569902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094443.

The product of its (nonzero) digits is 25194240, while the sum is 65.

The square root of 9889569902 is about 99446.3166839275. The cubic root of 9889569902 is about 2146.4748363500.

The spelling of 9889569902 in words is "nine billion, eight hundred eighty-nine million, five hundred sixty-nine thousand, nine hundred two".