9988810 has 16 divisors (see below), whose sum is σ = 19363176. Its totient is φ = 3688128.

The previous prime is 9988793. The next prime is 9988817. The reversal of 9988810 is 188899.

It can be written as a sum of positive squares in 4 ways, for example, as 6056521 + 3932289 = 2461^2 + 1983^2 .

It is a super-2 number, since 2×9988810² = 199552650432200, which contains 22 as substring.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9988817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38289 + ... + 38548.

Almost surely, 2^9988810 is an apocalyptic number.

9988810 is a deficient number, since it is larger than the sum of its proper divisors (9374366).

9988810 is a wasteful number, since it uses less digits than its factorization.

9988810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76857.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 9988810 is about 3160.5078705803. The cubic root of 9988810 is about 215.3630785962.

The spelling of 9988810 in words is "nine million, nine hundred eighty-eight thousand, eight hundred ten".