9900980 has 24 divisors (see below), whose sum is σ = 20956320. Its totient is φ = 3929120.

The previous prime is 9900959. The next prime is 9901007. The reversal of 9900980 is 890099.

9900980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9900980.

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, 731 + ... + 4509.

It is an arithmetic number, because the mean of its divisors is an integer number (873180).

Almost surely, 2^9900980 is an apocalyptic number.

It is an amenable number.

9900980 is an abundant number, since it is smaller than the sum of its proper divisors (11055340).

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

9900980 is a wasteful number, since it uses less digits than its factorization.

9900980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919 (or 3917 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 9900980 is about 3146.5822728796. The cubic root of 9900980 is about 214.7300018014.

The spelling of 9900980 in words is "nine million, nine hundred thousand, nine hundred eighty".