129392699 has 2 divisors, whose sum is σ = 129392700. Its totient is φ = 129392698.

The previous prime is 129392629. The next prime is 129392713. The reversal of 129392699 is 996293921.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129392699 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129392629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64696349 + 64696350.

It is an arithmetic number, because the mean of its divisors is an integer number (64696350).

Almost surely, 2^129392699 is an apocalyptic number.

129392699 is a deficient number, since it is larger than the sum of its proper divisors (1).

129392699 is an equidigital number, since it uses as much as digits as its factorization.

129392699 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 50.

The square root of 129392699 is about 11375.0911644698. The cubic root of 129392699 is about 505.7896335303.

The spelling of 129392699 in words is "one hundred twenty-nine million, three hundred ninety-two thousand, six hundred ninety-nine".