129098687 has 2 divisors, whose sum is σ = 129098688. Its totient is φ = 129098686.

The previous prime is 129098659. The next prime is 129098699. The reversal of 129098687 is 786890921.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 129098687 - 2¹⁰ = 129097663 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129098647) 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, 64549343 + 64549344.

It is an arithmetic number, because the mean of its divisors is an integer number (64549344).

Almost surely, 2^129098687 is an apocalyptic number.

129098687 is a deficient number, since it is larger than the sum of its proper divisors (1).

129098687 is an equidigital number, since it uses as much as digits as its factorization.

129098687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 129098687 is about 11362.1603139544. The cubic root of 129098687 is about 505.4062502349.

The spelling of 129098687 in words is "one hundred twenty-nine million, ninety-eight thousand, six hundred eighty-seven".