129880689 has 8 divisors (see below), whose sum is σ = 173238432. Its totient is φ = 86555040.

The previous prime is 129880679. The next prime is 129880691. The reversal of 129880689 is 986088921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 129880689 - 2⁵ = 129880657 is a prime.

It is a super-2 number, since 2×129880689² = 33737986750229442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129880679) 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 in 7 ways as a sum of consecutive naturals, for example, 3994 + ... + 16604.

It is an arithmetic number, because the mean of its divisors is an integer number (21654804).

Almost surely, 2^129880689 is an apocalyptic number.

It is an amenable number.

129880689 is a deficient number, since it is larger than the sum of its proper divisors (43357743).

129880689 is a wasteful number, since it uses less digits than its factorization.

129880689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16047.

The product of its (nonzero) digits is 497664, while the sum is 51.

The square root of 129880689 is about 11396.5209164903. The cubic root of 129880689 is about 506.4246787548.

The spelling of 129880689 in words is "one hundred twenty-nine million, eight hundred eighty thousand, six hundred eighty-nine".