9889638941424 has 320 divisors, whose sum is σ = 28437219901440. Its totient is φ = 2936616284160.

The previous prime is 9889638941417. The next prime is 9889638941447. The reversal of 9889638941424 is 4241498369889.

9889638941424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3413750344 + ... + 3413753240.

It is an arithmetic number, because the mean of its divisors is an integer number (88866312192).

Almost surely, 2^{9889638941424} 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 9889638941424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14218609950720).

9889638941424 is an abundant number, since it is smaller than the sum of its proper divisors (18547580960016).

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

9889638941424 is a wasteful number, since it uses less digits than its factorization.

9889638941424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588 (or 3582 counting only the distinct ones).

The product of its digits is 859963392, while the sum is 75.

The spelling of 9889638941424 in words is "nine trillion, eight hundred eighty-nine billion, six hundred thirty-eight million, nine hundred forty-one thousand, four hundred twenty-four".