9728993 has 4 divisors (see below), whose sum is σ = 9772080. Its totient is φ = 9685908.

The previous prime is 9728941. The next prime is 9729017. The reversal of 9728993 is 3998279.

9728993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9728993 - 2⁸ = 9728737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9728903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21203 + ... + 21656.

It is an arithmetic number, because the mean of its divisors is an integer number (2443020).

Almost surely, 2^9728993 is an apocalyptic number.

It is an amenable number.

9728993 is a deficient number, since it is larger than the sum of its proper divisors (43087).

9728993 is a wasteful number, since it uses less digits than its factorization.

9728993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43086.

The product of its digits is 244944, while the sum is 47.

The square root of 9728993 is about 3119.1333732305. The cubic root of 9728993 is about 213.4793951452.

The spelling of 9728993 in words is "nine million, seven hundred twenty-eight thousand, nine hundred ninety-three".