129807884 has 24 divisors (see below), whose sum is σ = 233154768. Its totient is φ = 63201600.

The previous prime is 129807871. The next prime is 129807893. The reversal of 129807884 is 488708921.

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, 67334 + ... + 69234.

It is an arithmetic number, because the mean of its divisors is an integer number (9714782).

Almost surely, 2^129807884 is an apocalyptic number.

It is an amenable number.

129807884 is a deficient number, since it is larger than the sum of its proper divisors (103346884).

129807884 is a wasteful number, since it uses less digits than its factorization.

129807884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345 (or 2343 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 129807884 is about 11393.3262921765. The cubic root of 129807884 is about 506.3300351235.

The spelling of 129807884 in words is "one hundred twenty-nine million, eight hundred seven thousand, eight hundred eighty-four".