9789902 has 16 divisors (see below), whose sum is σ = 15536400. Its totient is φ = 4613760.

The previous prime is 9789887. The next prime is 9789937. The reversal of 9789902 is 2099879.

9789902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

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, 8624 + ... + 9692.

It is an arithmetic number, because the mean of its divisors is an integer number (971025).

Almost surely, 2^9789902 is an apocalyptic number.

9789902 is a deficient number, since it is larger than the sum of its proper divisors (5746498).

9789902 is a wasteful number, since it uses less digits than its factorization.

9789902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 9789902 is about 3128.8819089253. The cubic root of 9789902 is about 213.9239692640.

The spelling of 9789902 in words is "nine million, seven hundred eighty-nine thousand, nine hundred two".