9999000084 has 48 divisors (see below), whose sum is σ = 23492246400. Its totient is φ = 3310002816.

The previous prime is 9999000083. The next prime is 9999000119. The reversal of 9999000084 is 4800009999.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9998999997 and 9999000042.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9999000083) 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, 3583762 + ... + 3586550.

It is an arithmetic number, because the mean of its divisors is an integer number (489421800).

Almost surely, 2^9999000084 is an apocalyptic number.

It is an amenable number.

9999000084 is an abundant number, since it is smaller than the sum of its proper divisors (13493246316).

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

9999000084 is a wasteful number, since it uses less digits than its factorization.

9999000084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4752 (or 4750 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 9999000084 is about 99995.0002950148. Note that the first 3 decimals coincide. The cubic root of 9999000084 is about 2154.3628791811.

The spelling of 9999000084 in words is "nine billion, nine hundred ninety-nine million, eighty-four", and thus it is an aban number.