9989189288 has 16 divisors (see below), whose sum is σ = 20170478580. Its totient is φ = 4610395008.

The previous prime is 9989189279. The next prime is 9989189299. The reversal of 9989189288 is 8829819899.

It can be written as a sum of positive squares in 2 ways, for example, as 8482041604 + 1507147684 = 92098^2 + 38822^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48024845 + ... + 48025052.

Almost surely, 2^9989189288 is an apocalyptic number.

It is an amenable number.

9989189288 is an abundant number, since it is smaller than the sum of its proper divisors (10181289292).

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

9989189288 is a wasteful number, since it uses less digits than its factorization.

9989189288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96049916 (or 96049912 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 71.

The square root of 9989189288 is about 99945.9318231613. The cubic root of 9989189288 is about 2153.6580443296.

The spelling of 9989189288 in words is "nine billion, nine hundred eighty-nine million, one hundred eighty-nine thousand, two hundred eighty-eight".