129316689 has 16 divisors (see below), whose sum is σ = 192216640. Its totient is φ = 85924800.

The previous prime is 129316667. The next prime is 129316721. The reversal of 129316689 is 986613921.

It is a happy number.

It is not a de Polignac number, because 129316689 - 2⁵ = 129316657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129316589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489 + ... + 16089.

It is an arithmetic number, because the mean of its divisors is an integer number (12013540).

Almost surely, 2^129316689 is an apocalyptic number.

It is an amenable number.

129316689 is a deficient number, since it is larger than the sum of its proper divisors (62899951).

129316689 is a wasteful number, since it uses less digits than its factorization.

129316689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15917 (or 15911 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 129316689 is about 11371.7496015345. The cubic root of 129316689 is about 505.6905743592.

The spelling of 129316689 in words is "one hundred twenty-nine million, three hundred sixteen thousand, six hundred eighty-nine".