129654866 has 8 divisors (see below), whose sum is σ = 212162544. Its totient is φ = 58934020.

The previous prime is 129654827. The next prime is 129654901. The reversal of 129654866 is 668456921.

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

It is a self number, because there is not a number n which added to its sum of digits gives 129654866.

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, 2946680 + ... + 2946723.

It is an arithmetic number, because the mean of its divisors is an integer number (26520318).

Almost surely, 2^129654866 is an apocalyptic number.

129654866 is a deficient number, since it is larger than the sum of its proper divisors (82507678).

129654866 is a wasteful number, since it uses less digits than its factorization.

129654866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5893416.

The product of its digits is 622080, while the sum is 47.

The square root of 129654866 is about 11386.6090650378. The cubic root of 129654866 is about 506.1310023414.

The spelling of 129654866 in words is "one hundred twenty-nine million, six hundred fifty-four thousand, eight hundred sixty-six".