9988886860 has 48 divisors (see below), whose sum is σ = 22289281056. Its totient is φ = 3747197952.

The previous prime is 9988886857. The next prime is 9988886861. The reversal of 9988886860 is 686888899.

It is a self number, because there is not a number n which added to its sum of digits gives 9988886860.

It is not an unprimeable number, because it can be changed into a prime (9988886861) 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, 44314 + ... + 148126.

It is an arithmetic number, because the mean of its divisors is an integer number (464360022).

Almost surely, 2^9988886860 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9988886860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11144640528).

9988886860 is an abundant number, since it is smaller than the sum of its proper divisors (12300394196).

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

9988886860 is a wasteful number, since it uses less digits than its factorization.

9988886860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104122 (or 104120 counting only the distinct ones).

The product of its (nonzero) digits is 95551488, while the sum is 70.

The square root of 9988886860 is about 99944.4188536809. The cubic root of 9988886860 is about 2153.6363097307.

The spelling of 9988886860 in words is "nine billion, nine hundred eighty-eight million, eight hundred eighty-six thousand, eight hundred sixty".