9669221 has 2 divisors, whose sum is σ = 9669222. Its totient is φ = 9669220.

The previous prime is 9669217. The next prime is 9669259. The reversal of 9669221 is 1229669.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6100900 + 3568321 = 2470^2 + 1889^2 .

It is a cyclic number.

It is not a de Polignac number, because 9669221 - 2² = 9669217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9669421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4834610 + 4834611.

It is an arithmetic number, because the mean of its divisors is an integer number (4834611).

Almost surely, 2^9669221 is an apocalyptic number.

It is an amenable number.

9669221 is a deficient number, since it is larger than the sum of its proper divisors (1).

9669221 is an equidigital number, since it uses as much as digits as its factorization.

9669221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 35.

The square root of 9669221 is about 3109.5371038146. The cubic root of 9669221 is about 213.0413124185.

The spelling of 9669221 in words is "nine million, six hundred sixty-nine thousand, two hundred twenty-one".