9023798221 has 4 divisors (see below), whose sum is σ = 9025945344. Its totient is φ = 9021651100.

The previous prime is 9023798171. The next prime is 9023798261. The reversal of 9023798221 is 1228973209.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1228973209 = 907 ⋅1354987.

It is a cyclic number.

It is not a de Polignac number, because 9023798221 - 2⁹ = 9023797709 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 (9023798261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067245 + ... + 1075666.

It is an arithmetic number, because the mean of its divisors is an integer number (2256486336).

Almost surely, 2^9023798221 is an apocalyptic number.

It is an amenable number.

9023798221 is a deficient number, since it is larger than the sum of its proper divisors (2147123).

9023798221 is a wasteful number, since it uses less digits than its factorization.

9023798221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2147122.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 9023798221 is about 94993.6746367883. The cubic root of 9023798221 is about 2081.9156277337.

The spelling of 9023798221 in words is "nine billion, twenty-three million, seven hundred ninety-eight thousand, two hundred twenty-one".