129388193 has 16 divisors (see below), whose sum is σ = 143856000. Its totient is φ = 115390080.

The previous prime is 129388187. The next prime is 129388201. The reversal of 129388193 is 391883921.

It is a cyclic number.

It is not a de Polignac number, because 129388193 - 2⁴ = 129388177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129388163) 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, 215708 + ... + 216306.

It is an arithmetic number, because the mean of its divisors is an integer number (8991000).

Almost surely, 2^129388193 is an apocalyptic number.

It is an amenable number.

129388193 is a deficient number, since it is larger than the sum of its proper divisors (14467807).

129388193 is a wasteful number, since it uses less digits than its factorization.

129388193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952.

The product of its digits is 93312, while the sum is 44.

The square root of 129388193 is about 11374.8930983988. The cubic root of 129388193 is about 505.7837622187.

The spelling of 129388193 in words is "one hundred twenty-nine million, three hundred eighty-eight thousand, one hundred ninety-three".