129300279 has 8 divisors (see below), whose sum is σ = 172469232. Its totient is φ = 86165760.

The previous prime is 129300271. The next prime is 129300289. The reversal of 129300279 is 972003921.

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

It is not a de Polignac number, because 129300279 - 2³ = 129300271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129300271) 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, 2037 + ... + 16209.

It is an arithmetic number, because the mean of its divisors is an integer number (21558654).

Almost surely, 2^129300279 is an apocalyptic number.

129300279 is a deficient number, since it is larger than the sum of its proper divisors (43168953).

129300279 is a wasteful number, since it uses less digits than its factorization.

129300279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17217.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 129300279 is about 11371.0280537865. The cubic root of 129300279 is about 505.6691831182.

The spelling of 129300279 in words is "one hundred twenty-nine million, three hundred thousand, two hundred seventy-nine".