129729608 has 16 divisors (see below), whose sum is σ = 244702080. Its totient is φ = 64475728.

The previous prime is 129729563. The next prime is 129729629. The reversal of 129729608 is 806927921.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47216 + ... + 49887.

It is an arithmetic number, because the mean of its divisors is an integer number (15293880).

Almost surely, 2^129729608 is an apocalyptic number.

It is an amenable number.

129729608 is a deficient number, since it is larger than the sum of its proper divisors (114972472).

129729608 is a wasteful number, since it uses less digits than its factorization.

129729608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97276 (or 97272 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 129729608 is about 11389.8906052692. The cubic root of 129729608 is about 506.2282399223.

The spelling of 129729608 in words is "one hundred twenty-nine million, seven hundred twenty-nine thousand, six hundred eight".