9989291040 has 192 divisors, whose sum is σ = 33591075840. Its totient is φ = 2487905280.

The previous prime is 9989291033. The next prime is 9989291057. The reversal of 9989291040 is 401929899.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 639807 + ... + 655233.

It is an arithmetic number, because the mean of its divisors is an integer number (174953520).

Almost surely, 2^9989291040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9989291040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16795537920).

9989291040 is an abundant number, since it is smaller than the sum of its proper divisors (23601784800).

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

9989291040 is a wasteful number, since it uses less digits than its factorization.

9989291040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15535 (or 15527 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 51.

The square root of 9989291040 is about 99946.4408570911. The cubic root of 9989291040 is about 2153.6653568439.

The spelling of 9989291040 in words is "nine billion, nine hundred eighty-nine million, two hundred ninety-one thousand, forty".