9989509440 has 112 divisors (see below), whose sum is σ = 32739909120. Its totient is φ = 2577930240.

The previous prime is 9989509373. The next prime is 9989509459. The reversal of 9989509440 is 449059899.

It is a super-2 number, since 2×9989509440² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138075 + ... + 197594.

Almost surely, 2^9989509440 is an apocalyptic number.

It is an amenable number.

9989509440 is an abundant number, since it is smaller than the sum of its proper divisors (22750399680).

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

9989509440 is a wasteful number, since it uses less digits than its factorization.

9989509440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335720 (or 335710 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The square root of 9989509440 is about 99947.5334362985. The cubic root of 9989509440 is about 2153.6810522216.

The spelling of 9989509440 in words is "nine billion, nine hundred eighty-nine million, five hundred nine thousand, four hundred forty".