129289064 has 16 divisors (see below), whose sum is σ = 242538720. Its totient is φ = 64612080.

The previous prime is 129289033. The next prime is 129289067. The reversal of 129289064 is 460982921.

It is not an unprimeable number, because it can be changed into a prime (129289067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25787 + ... + 30389.

It is an arithmetic number, because the mean of its divisors is an integer number (15158670).

Almost surely, 2^129289064 is an apocalyptic number.

It is an amenable number.

129289064 is a deficient number, since it is larger than the sum of its proper divisors (113249656).

129289064 is a wasteful number, since it uses less digits than its factorization.

129289064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8120 (or 8116 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 129289064 is about 11370.5349038645. The cubic root of 129289064 is about 505.6545627738.

The spelling of 129289064 in words is "one hundred twenty-nine million, two hundred eighty-nine thousand, sixty-four".