9889636 has 12 divisors (see below), whose sum is σ = 17335612. Its totient is φ = 4936608.

The previous prime is 9889601. The next prime is 9889637. The reversal of 9889636 is 6369889.

It can be written as a sum of positive squares in 2 ways, for example, as 9734400 + 155236 = 3120^2 + 394^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 9889636.

It is not an unprimeable number, because it can be changed into a prime (9889637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246 + ... + 4618.

Almost surely, 2^9889636 is an apocalyptic number.

It is an amenable number.

9889636 is a deficient number, since it is larger than the sum of its proper divisors (7445976).

9889636 is a wasteful number, since it uses less digits than its factorization.

9889636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4110 (or 4108 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The square root of 9889636 is about 3144.7791655377. The cubic root of 9889636 is about 214.6479618404.

The spelling of 9889636 in words is "nine million, eight hundred eighty-nine thousand, six hundred thirty-six".