9989826144 has 96 divisors (see below), whose sum is σ = 27829720800. Its totient is φ = 3126853632.

The previous prime is 9989826131. The next prime is 9989826169. The reversal of 9989826144 is 4416289899.

It is a tau number, because it is divible by the number of its divisors (96).

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, 725952 + ... + 739584.

It is an arithmetic number, because the mean of its divisors is an integer number (289892925).

Almost surely, 2^9989826144 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 9989826144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13914860400).

9989826144 is an abundant number, since it is smaller than the sum of its proper divisors (17839894656).

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

9989826144 is a wasteful number, since it uses less digits than its factorization.

9989826144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14112 (or 14104 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 60.

The square root of 9989826144 is about 99949.1177749959. The cubic root of 9989826144 is about 2153.7038118376.

The spelling of 9989826144 in words is "nine billion, nine hundred eighty-nine million, eight hundred twenty-six thousand, one hundred forty-four".