129589538 has 48 divisors (see below), whose sum is σ = 234796320. Its totient is φ = 53284608.

The previous prime is 129589531. The next prime is 129589549. The reversal of 129589538 is 835985921.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129589531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108581 + ... + 109767.

It is an arithmetic number, because the mean of its divisors is an integer number (4891590).

Almost surely, 2^129589538 is an apocalyptic number.

129589538 is a deficient number, since it is larger than the sum of its proper divisors (105206782).

129589538 is a wasteful number, since it uses less digits than its factorization.

129589538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1238 counting only the distinct ones).

The product of its digits is 777600, while the sum is 50.

The square root of 129589538 is about 11383.7400708203. The cubic root of 129589538 is about 506.0459815422.

The spelling of 129589538 in words is "one hundred twenty-nine million, five hundred eighty-nine thousand, five hundred thirty-eight".