9885728943 has 16 divisors (see below), whose sum is σ = 14650064640. Its totient is φ = 6588442872.

The previous prime is 9885728933. The next prime is 9885728999. The reversal of 9885728943 is 3498275889.

9885728943 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9885728943 - 2⁴ = 9885728927 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9885728903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34630 + ... + 144812.

It is an arithmetic number, because the mean of its divisors is an integer number (915629040).

Almost surely, 2^9885728943 is an apocalyptic number.

9885728943 is a deficient number, since it is larger than the sum of its proper divisors (4764335697).

9885728943 is a wasteful number, since it uses less digits than its factorization.

9885728943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113515 (or 113509 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 63.

The square root of 9885728943 is about 99427.0030876924. The cubic root of 9885728943 is about 2146.1969142731.

The spelling of 9885728943 in words is "nine billion, eight hundred eighty-five million, seven hundred twenty-eight thousand, nine hundred forty-three".