129907927 has 2 divisors, whose sum is σ = 129907928. Its totient is φ = 129907926.

The previous prime is 129907913. The next prime is 129907957. The reversal of 129907927 is 729709921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129907927 - 2¹¹ = 129905879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129907957) 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, 64953963 + 64953964.

It is an arithmetic number, because the mean of its divisors is an integer number (64953964).

Almost surely, 2^129907927 is an apocalyptic number.

129907927 is a deficient number, since it is larger than the sum of its proper divisors (1).

129907927 is an equidigital number, since it uses as much as digits as its factorization.

129907927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 129907927 is about 11397.7158676640. The cubic root of 129907927 is about 506.4600779902.

The spelling of 129907927 in words is "one hundred twenty-nine million, nine hundred seven thousand, nine hundred twenty-seven".