129828667 has 2 divisors, whose sum is σ = 129828668. Its totient is φ = 129828666.

The previous prime is 129828659. The next prime is 129828703. The reversal of 129828667 is 766828921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129828667 - 2³ = 129828659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129828667.

It is not a weakly prime, because it can be changed into another prime (129828607) 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, 64914333 + 64914334.

It is an arithmetic number, because the mean of its divisors is an integer number (64914334).

Almost surely, 2^129828667 is an apocalyptic number.

129828667 is a deficient number, since it is larger than the sum of its proper divisors (1).

129828667 is an equidigital number, since it uses as much as digits as its factorization.

129828667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 49.

The square root of 129828667 is about 11394.2383246973. The cubic root of 129828667 is about 506.3570558130.

The spelling of 129828667 in words is "one hundred twenty-nine million, eight hundred twenty-eight thousand, six hundred sixty-seven".