9323993221 has 2 divisors, whose sum is σ = 9323993222. Its totient is φ = 9323993220.

The previous prime is 9323993201. The next prime is 9323993243. The reversal of 9323993221 is 1223993239.

9323993221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9221760900 + 102232321 = 96030^2 + 10111^2 .

It is a cyclic number.

It is not a de Polignac number, because 9323993221 - 2⁹ = 9323992709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9323993201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4661996610 + 4661996611.

It is an arithmetic number, because the mean of its divisors is an integer number (4661996611).

Almost surely, 2^9323993221 is an apocalyptic number.

It is an amenable number.

9323993221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9323993221 is an equidigital number, since it uses as much as digits as its factorization.

9323993221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 43.

The square root of 9323993221 is about 96560.8265343664. The cubic root of 9323993221 is about 2104.7506373309.

The spelling of 9323993221 in words is "nine billion, three hundred twenty-three million, nine hundred ninety-three thousand, two hundred twenty-one".