29244221 has 2 divisors, whose sum is σ = 29244222. Its totient is φ = 29244220.

The previous prime is 29244203. The next prime is 29244223. The reversal of 29244221 is 12244292.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29008996 + 235225 = 5386^2 + 485^2 .

It is a cyclic number.

It is not a de Polignac number, because 29244221 - 2¹⁴ = 29227837 is a prime.

Together with 29244223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29244223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14622110 + 14622111.

It is an arithmetic number, because the mean of its divisors is an integer number (14622111).

Almost surely, 2^29244221 is an apocalyptic number.

It is an amenable number.

29244221 is a deficient number, since it is larger than the sum of its proper divisors (1).

29244221 is an equidigital number, since it uses as much as digits as its factorization.

29244221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 29244221 is about 5407.7926180652. The cubic root of 29244221 is about 308.0917145491.

The spelling of 29244221 in words is "twenty-nine million, two hundred forty-four thousand, two hundred twenty-one".