9697728443 has 8 divisors (see below), whose sum is σ = 10519940928. Its totient is φ = 8886406464.

The previous prime is 9697728433. The next prime is 9697728463. The reversal of 9697728443 is 3448277969.

9697728443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9697728443 - 2⁴ = 9697728427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9697728433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2720771 + ... + 2724332.

It is an arithmetic number, because the mean of its divisors is an integer number (1314992616).

Almost surely, 2^9697728443 is an apocalyptic number.

9697728443 is a deficient number, since it is larger than the sum of its proper divisors (822212485).

9697728443 is a wasteful number, since it uses less digits than its factorization.

9697728443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5445253.

The product of its digits is 18289152, while the sum is 59.

The square root of 9697728443 is about 98477.0452592887. The cubic root of 9697728443 is about 2132.5047453861.

The spelling of 9697728443 in words is "nine billion, six hundred ninety-seven million, seven hundred twenty-eight thousand, four hundred forty-three".