9836221 has 2 divisors, whose sum is σ = 9836222. Its totient is φ = 9836220.

The previous prime is 9836219. The next prime is 9836227. The reversal of 9836221 is 1226389.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6812100 + 3024121 = 2610^2 + 1739^2 .

It is a cyclic number.

It is not a de Polignac number, because 9836221 - 2¹ = 9836219 is a prime.

Together with 9836219, it forms a pair of twin primes.

It is a Chen prime.

9836221 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9836227) 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, 4918110 + 4918111.

It is an arithmetic number, because the mean of its divisors is an integer number (4918111).

Almost surely, 2^9836221 is an apocalyptic number.

It is an amenable number.

9836221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9836221 is an equidigital number, since it uses as much as digits as its factorization.

9836221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 31.

The square root of 9836221 is about 3136.2750198285. The cubic root of 9836221 is about 214.2608183352.

It can be divided in two parts, 98362 and 21, that multiplied together give a palindrome (2065602).

The spelling of 9836221 in words is "nine million, eight hundred thirty-six thousand, two hundred twenty-one".