129829894 has 16 divisors (see below), whose sum is σ = 204517728. Its totient is φ = 61693632.

The previous prime is 129829883. The next prime is 129829937. The reversal of 129829894 is 498928921.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 1767 + ... + 16210.

It is an arithmetic number, because the mean of its divisors is an integer number (12782358).

Almost surely, 2^129829894 is an apocalyptic number.

129829894 is a deficient number, since it is larger than the sum of its proper divisors (74687834).

129829894 is a wasteful number, since it uses less digits than its factorization.

129829894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18159.

The product of its digits is 746496, while the sum is 52.

The square root of 129829894 is about 11394.2921675723. The cubic root of 129829894 is about 506.3586509875.

The spelling of 129829894 in words is "one hundred twenty-nine million, eight hundred twenty-nine thousand, eight hundred ninety-four".