29424221 has 2 divisors, whose sum is σ = 29424222. Its totient is φ = 29424220.

The previous prime is 29424193. The next prime is 29424253. The reversal of 29424221 is 12242492.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23716900 + 5707321 = 4870^2 + 2389^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29424221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29424121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14712110 + 14712111.

It is an arithmetic number, because the mean of its divisors is an integer number (14712111).

Almost surely, 2^29424221 is an apocalyptic number.

It is an amenable number.

29424221 is a deficient number, since it is larger than the sum of its proper divisors (1).

29424221 is an equidigital number, since it uses as much as digits as its factorization.

29424221 is an evil number, because the sum of its binary digits is even.

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

The square root of 29424221 is about 5424.4097374737. The cubic root of 29424221 is about 308.7225299693.

The spelling of 29424221 in words is "twenty-nine million, four hundred twenty-four thousand, two hundred twenty-one".