9889638941423 has 8 divisors (see below), whose sum is σ = 10373652688896. Its totient is φ = 9410127647800.

The previous prime is 9889638941417. The next prime is 9889638941447. The reversal of 9889638941423 is 3241498369889.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9889638941423 - 2⁶ = 9889638941359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9889638941473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125608963 + ... + 1125617748.

It is an arithmetic number, because the mean of its divisors is an integer number (1296706586112).

Almost surely, 2^{9889638941423} is an apocalyptic number.

9889638941423 is a deficient number, since it is larger than the sum of its proper divisors (484013747473).

9889638941423 is a wasteful number, since it uses less digits than its factorization.

9889638941423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251226925.

The product of its digits is 644972544, while the sum is 74.

The spelling of 9889638941423 in words is "nine trillion, eight hundred eighty-nine billion, six hundred thirty-eight million, nine hundred forty-one thousand, four hundred twenty-three".