129916239 has 8 divisors (see below), whose sum is σ = 173279232. Its totient is φ = 86582040.

The previous prime is 129916183. The next prime is 129916279. The reversal of 129916239 is 932619921.

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

It is not a de Polignac number, because 129916239 - 2¹⁵ = 129883471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 129916239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129916279) 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, 7794 + ... + 17904.

It is an arithmetic number, because the mean of its divisors is an integer number (21659904).

Almost surely, 2^129916239 is an apocalyptic number.

129916239 is a deficient number, since it is larger than the sum of its proper divisors (43362993).

129916239 is a wasteful number, since it uses less digits than its factorization.

129916239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14397.

The product of its digits is 52488, while the sum is 42.

The square root of 129916239 is about 11398.0804962941. The cubic root of 129916239 is about 506.4708795029.

The spelling of 129916239 in words is "one hundred twenty-nine million, nine hundred sixteen thousand, two hundred thirty-nine".