9904789 has 16 divisors (see below), whose sum is σ = 10812672. Its totient is φ = 9047808.

The previous prime is 9904781. The next prime is 9904793. The reversal of 9904789 is 9874099.

9904789 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9904789 - 2³ = 9904781 is a prime.

It is a Duffinian number.

9904789 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9904781) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 87597 + ... + 87709.

It is an arithmetic number, because the mean of its divisors is an integer number (675792).

Almost surely, 2^9904789 is an apocalyptic number.

It is an amenable number.

9904789 is a deficient number, since it is larger than the sum of its proper divisors (907883).

9904789 is a wasteful number, since it uses less digits than its factorization.

9904789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 9904789 is about 3147.1874745557. The cubic root of 9904789 is about 214.7575344872.

The spelling of 9904789 in words is "nine million, nine hundred four thousand, seven hundred eighty-nine".