9988812 has 24 divisors (see below), whose sum is σ = 25897200. Its totient is φ = 3329568.

The previous prime is 9988793. The next prime is 9988817. The reversal of 9988812 is 2188899.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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, 46137 + ... + 46352.

It is an arithmetic number, because the mean of its divisors is an integer number (1079050).

Almost surely, 2^9988812 is an apocalyptic number.

It is an amenable number.

9988812 is an abundant number, since it is smaller than the sum of its proper divisors (15908388).

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

9988812 is a wasteful number, since it uses less digits than its factorization.

9988812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92502 (or 92494 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 9988812 is about 3160.5081869851. The cubic root of 9988812 is about 215.3630929698.

The spelling of 9988812 in words is "nine million, nine hundred eighty-eight thousand, eight hundred twelve".