129934866 has 16 divisors (see below), whose sum is σ = 271168704. Its totient is φ = 41428464.

The previous prime is 129934841. The next prime is 129934873. The reversal of 129934866 is 668439921.

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, 470641 + ... + 470916.

It is an arithmetic number, because the mean of its divisors is an integer number (16948044).

Almost surely, 2^129934866 is an apocalyptic number.

129934866 is an abundant number, since it is smaller than the sum of its proper divisors (141233838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129934866 is a wasteful number, since it uses less digits than its factorization.

129934866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941585.

The product of its digits is 559872, while the sum is 48.

The square root of 129934866 is about 11398.8975782748. The cubic root of 129934866 is about 506.4950837705.

The spelling of 129934866 in words is "one hundred twenty-nine million, nine hundred thirty-four thousand, eight hundred sixty-six".