29281229 has 2 divisors, whose sum is σ = 29281230. Its totient is φ = 29281228.

The previous prime is 29281207. The next prime is 29281289. The reversal of 29281229 is 92218292.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15760900 + 13520329 = 3970^2 + 3677^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29281229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29281289) 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, 14640614 + 14640615.

It is an arithmetic number, because the mean of its divisors is an integer number (14640615).

Almost surely, 2^29281229 is an apocalyptic number.

It is an amenable number.

29281229 is a deficient number, since it is larger than the sum of its proper divisors (1).

29281229 is an equidigital number, since it uses as much as digits as its factorization.

29281229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 29281229 is about 5411.2132650636. The cubic root of 29281229 is about 308.2216211488.

The spelling of 29281229 in words is "twenty-nine million, two hundred eighty-one thousand, two hundred twenty-nine".