129744199 has 8 divisors (see below), whose sum is σ = 140458752. Its totient is φ = 119134560.

The previous prime is 129744191. The next prime is 129744203. The reversal of 129744199 is 991447921.

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

It is a cyclic number.

It is not a de Polignac number, because 129744199 - 2³ = 129744191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129744191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23644 + ... + 28609.

It is an arithmetic number, because the mean of its divisors is an integer number (17557344).

Almost surely, 2^129744199 is an apocalyptic number.

129744199 is a deficient number, since it is larger than the sum of its proper divisors (10714553).

129744199 is a wasteful number, since it uses less digits than its factorization.

129744199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52457.

The product of its digits is 163296, while the sum is 46.

The square root of 129744199 is about 11390.5311114100. The cubic root of 129744199 is about 506.2472181120.

The spelling of 129744199 in words is "one hundred twenty-nine million, seven hundred forty-four thousand, one hundred ninety-nine".