9988227188 has 6 divisors (see below), whose sum is σ = 17479397586. Its totient is φ = 4994113592.

The previous prime is 9988227157. The next prime is 9988227251. The reversal of 9988227188 is 8817228899.

It can be written as a sum of positive squares in only one way, i.e., 9554671504 + 433555684 = 97748^2 + 20822^2 .

It is a super-3 number, since 3×9988227188³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9988227188.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1248528395 + ... + 1248528402.

It is an arithmetic number, because the mean of its divisors is an integer number (2913232931).

Almost surely, 2^9988227188 is an apocalyptic number.

It is an amenable number.

9988227188 is a deficient number, since it is larger than the sum of its proper divisors (7491170398).

9988227188 is a wasteful number, since it uses less digits than its factorization.

9988227188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497056801 (or 2497056799 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 62.

The square root of 9988227188 is about 99941.1186049066. The cubic root of 9988227188 is about 2153.5888995482.

The spelling of 9988227188 in words is "nine billion, nine hundred eighty-eight million, two hundred twenty-seven thousand, one hundred eighty-eight".