129339718 has 16 divisors (see below), whose sum is σ = 203233536. Its totient is φ = 61617160.

The previous prime is 129339709. The next prime is 129339731. The reversal of 129339718 is 817933921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6753 + ... + 17443.

It is an arithmetic number, because the mean of its divisors is an integer number (12702096).

Almost surely, 2^129339718 is an apocalyptic number.

129339718 is a deficient number, since it is larger than the sum of its proper divisors (73893818).

129339718 is a wasteful number, since it uses less digits than its factorization.

129339718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10979.

The product of its digits is 81648, while the sum is 43.

The square root of 129339718 is about 11372.7621095317. The cubic root of 129339718 is about 505.7205907402.

The spelling of 129339718 in words is "one hundred twenty-nine million, three hundred thirty-nine thousand, seven hundred eighteen".