9221789 has 2 divisors, whose sum is σ = 9221790. Its totient is φ = 9221788.

The previous prime is 9221777. The next prime is 9221801. The reversal of 9221789 is 9871229.

It is a balanced prime because it is at equal distance from previous prime (9221777) and next prime (9221801).

It can be written as a sum of positive squares in only one way, i.e., 7022500 + 2199289 = 2650^2 + 1483^2 .

It is an emirp because it is prime and its reverse (9871229) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9221789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9221189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4610894 + 4610895.

It is an arithmetic number, because the mean of its divisors is an integer number (4610895).

Almost surely, 2^9221789 is an apocalyptic number.

It is an amenable number.

9221789 is a deficient number, since it is larger than the sum of its proper divisors (1).

9221789 is an equidigital number, since it uses as much as digits as its factorization.

9221789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 9221789 is about 3036.7398637355. The cubic root of 9221789 is about 209.7032012832.

The spelling of 9221789 in words is "nine million, two hundred twenty-one thousand, seven hundred eighty-nine".