129069911 has 2 divisors, whose sum is σ = 129069912. Its totient is φ = 129069910.

The previous prime is 129069881. The next prime is 129069917. The reversal of 129069911 is 119960921.

It is a strong prime.

It is an emirp because it is prime and its reverse (119960921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129069911 - 2¹⁰ = 129068887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129069917) 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, 64534955 + 64534956.

It is an arithmetic number, because the mean of its divisors is an integer number (64534956).

Almost surely, 2^129069911 is an apocalyptic number.

129069911 is a deficient number, since it is larger than the sum of its proper divisors (1).

129069911 is an equidigital number, since it uses as much as digits as its factorization.

129069911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 129069911 is about 11360.8939348979. The cubic root of 129069911 is about 505.3686958871.

The spelling of 129069911 in words is "one hundred twenty-nine million, sixty-nine thousand, nine hundred eleven".