129476687 has 2 divisors, whose sum is σ = 129476688. Its totient is φ = 129476686.

The previous prime is 129476671. The next prime is 129476689. The reversal of 129476687 is 786674921.

It is a strong prime.

It is an emirp because it is prime and its reverse (786674921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129476687 - 2⁴ = 129476671 is a prime.

Together with 129476689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129476689) 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, 64738343 + 64738344.

It is an arithmetic number, because the mean of its divisors is an integer number (64738344).

Almost surely, 2^129476687 is an apocalyptic number.

129476687 is a deficient number, since it is larger than the sum of its proper divisors (1).

129476687 is an equidigital number, since it uses as much as digits as its factorization.

129476687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 129476687 is about 11378.7823162235. The cubic root of 129476687 is about 505.8990448344.

The spelling of 129476687 in words is "one hundred twenty-nine million, four hundred seventy-six thousand, six hundred eighty-seven".