129986306 has 8 divisors (see below), whose sum is σ = 196176144. Its totient is φ = 64594260.

The previous prime is 129986299. The next prime is 129986321. The reversal of 129986306 is 603689921.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199040 + ... + 199691.

It is an arithmetic number, because the mean of its divisors is an integer number (24522018).

Almost surely, 2^129986306 is an apocalyptic number.

129986306 is a deficient number, since it is larger than the sum of its proper divisors (66189838).

129986306 is a wasteful number, since it uses less digits than its factorization.

129986306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398896.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 129986306 is about 11401.1537135502. The cubic root of 129986306 is about 506.5619138433.

The spelling of 129986306 in words is "one hundred twenty-nine million, nine hundred eighty-six thousand, three hundred six".