9989040 has 40 divisors (see below), whose sum is σ = 30966768. Its totient is φ = 2663680.

The previous prime is 9989039. The next prime is 9989053. The reversal of 9989040 is 409899.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 9989040.

It is an unprimeable number.

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, 20571 + ... + 21050.

Almost surely, 2^9989040 is an apocalyptic number.

It is an amenable number.

9989040 is an abundant number, since it is smaller than the sum of its proper divisors (20977728).

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

9989040 is a wasteful number, since it uses less digits than its factorization.

9989040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41637 (or 41631 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 9989040 is about 3160.5442569279. The cubic root of 9989040 is about 215.3647315501.

The spelling of 9989040 in words is "nine million, nine hundred eighty-nine thousand, forty".