9834221 has 2 divisors, whose sum is σ = 9834222. Its totient is φ = 9834220.

The previous prime is 9834217. The next prime is 9834241. The reversal of 9834221 is 1224389.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5692996 + 4141225 = 2386^2 + 2035^2 .

It is an emirp because it is prime and its reverse (1224389) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9834221 - 2² = 9834217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9834241) 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, 4917110 + 4917111.

It is an arithmetic number, because the mean of its divisors is an integer number (4917111).

Almost surely, 2^9834221 is an apocalyptic number.

It is an amenable number.

9834221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9834221 is an equidigital number, since it uses as much as digits as its factorization.

9834221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 9834221 is about 3135.9561540302. The cubic root of 9834221 is about 214.2462954582.

The spelling of 9834221 in words is "nine million, eight hundred thirty-four thousand, two hundred twenty-one".