9989556 has 48 divisors (see below), whose sum is σ = 24259200. Its totient is φ = 3196800.

The previous prime is 9989509. The next prime is 9989569. The reversal of 9989556 is 6559899.

9989556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 9989499 and 9989508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66081 + ... + 66231.

It is an arithmetic number, because the mean of its divisors is an integer number (505400).

Almost surely, 2^9989556 is an apocalyptic number.

It is an amenable number.

9989556 is an abundant number, since it is smaller than the sum of its proper divisors (14269644).

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

9989556 is a wasteful number, since it uses less digits than its factorization.

9989556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 342 counting only the distinct ones).

The product of its digits is 874800, while the sum is 51.

The square root of 9989556 is about 3160.6258873837. The cubic root of 9989556 is about 215.3684398240.

The spelling of 9989556 in words is "nine million, nine hundred eighty-nine thousand, five hundred fifty-six".