9990533124 has 72 divisors (see below), whose sum is σ = 29668871232. Its totient is φ = 2794553280.

The previous prime is 9990533117. The next prime is 9990533141. The reversal of 9990533124 is 4213350999.

9990533124 is a `hidden beast` number, since 9 + 9 + 90 + 533 + 1 + 24 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9990533124.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 965184 + ... + 975479.

It is an arithmetic number, because the mean of its divisors is an integer number (412067656).

Almost surely, 2^9990533124 is an apocalyptic number.

It is an amenable number.

9990533124 is an abundant number, since it is smaller than the sum of its proper divisors (19678338108).

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

9990533124 is a wasteful number, since it uses less digits than its factorization.

9990533124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940697 (or 1940692 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 9990533124 is about 99952.6544119765. The cubic root of 9990533124 is about 2153.7546165123.

The spelling of 9990533124 in words is "nine billion, nine hundred ninety million, five hundred thirty-three thousand, one hundred twenty-four".