29281289 has 2 divisors, whose sum is σ = 29281290. Its totient is φ = 29281288.

The previous prime is 29281229. The next prime is 29281297. The reversal of 29281289 is 98218292.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26183689 + 3097600 = 5117^2 + 1760^2 .

It is a cyclic number.

It is not a de Polignac number, because 29281289 - 2²⁰ = 28232713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29281229) 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, 14640644 + 14640645.

It is an arithmetic number, because the mean of its divisors is an integer number (14640645).

Almost surely, 2^29281289 is an apocalyptic number.

It is an amenable number.

29281289 is a deficient number, since it is larger than the sum of its proper divisors (1).

29281289 is an equidigital number, since it uses as much as digits as its factorization.

29281289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 41.

The square root of 29281289 is about 5411.2188091039. The cubic root of 29281289 is about 308.2218316738.

The spelling of 29281289 in words is "twenty-nine million, two hundred eighty-one thousand, two hundred eighty-nine".