9986814 has 24 divisors (see below), whose sum is σ = 22440600. Its totient is φ = 3328776.

The previous prime is 9986813. The next prime is 9986831. The reversal of 9986814 is 4186899.

It is a self number, because there is not a number n which added to its sum of digits gives 9986814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9986813) 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 11 ways as a sum of consecutive naturals, for example, 9789 + ... + 10760.

It is an arithmetic number, because the mean of its divisors is an integer number (935025).

Almost surely, 2^9986814 is an apocalyptic number.

9986814 is an abundant number, since it is smaller than the sum of its proper divisors (12453786).

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

9986814 is a wasteful number, since it uses less digits than its factorization.

9986814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20566 (or 20554 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 9986814 is about 3160.1920827697. The cubic root of 9986814 is about 215.3487327652.

The spelling of 9986814 in words is "nine million, nine hundred eighty-six thousand, eight hundred fourteen".