129788327 has 2 divisors, whose sum is σ = 129788328. Its totient is φ = 129788326.

The previous prime is 129788279. The next prime is 129788363. The reversal of 129788327 is 723887921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129788327 - 2¹⁸ = 129526183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129788027) 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, 64894163 + 64894164.

It is an arithmetic number, because the mean of its divisors is an integer number (64894164).

Almost surely, 2^129788327 is an apocalyptic number.

129788327 is a deficient number, since it is larger than the sum of its proper divisors (1).

129788327 is an equidigital number, since it uses as much as digits as its factorization.

129788327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 47.

The square root of 129788327 is about 11392.4679942495. The cubic root of 129788327 is about 506.3046057646.

The spelling of 129788327 in words is "one hundred twenty-nine million, seven hundred eighty-eight thousand, three hundred twenty-seven".