9738221 has 2 divisors, whose sum is σ = 9738222. Its totient is φ = 9738220.

The previous prime is 9738199. The next prime is 9738257. The reversal of 9738221 is 1228379.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8497225 + 1240996 = 2915^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 9738221 - 2¹⁰ = 9737197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9738721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4869110 + 4869111.

It is an arithmetic number, because the mean of its divisors is an integer number (4869111).

Almost surely, 2^9738221 is an apocalyptic number.

It is an amenable number.

9738221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9738221 is an equidigital number, since it uses as much as digits as its factorization.

9738221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 32.

The square root of 9738221 is about 3120.6122796656. The cubic root of 9738221 is about 213.5468692521.

The spelling of 9738221 in words is "nine million, seven hundred thirty-eight thousand, two hundred twenty-one".