129229559 has 2 divisors, whose sum is σ = 129229560. Its totient is φ = 129229558.

The previous prime is 129229553. The next prime is 129229561. The reversal of 129229559 is 955922921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129229559 - 2¹² = 129225463 is a prime.

Together with 129229561, 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 (129229553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64614779 + 64614780.

It is an arithmetic number, because the mean of its divisors is an integer number (64614780).

Almost surely, 2^129229559 is an apocalyptic number.

129229559 is a deficient number, since it is larger than the sum of its proper divisors (1).

129229559 is an equidigital number, since it uses as much as digits as its factorization.

129229559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 44.

The square root of 129229559 is about 11367.9179712030. The cubic root of 129229559 is about 505.5769754122.

The spelling of 129229559 in words is "one hundred twenty-nine million, two hundred twenty-nine thousand, five hundred fifty-nine".