129386704 has 10 divisors (see below), whose sum is σ = 250686770. Its totient is φ = 64693344.

The previous prime is 129386689. The next prime is 129386729. The reversal of 129386704 is 407683921.

It can be written as a sum of positive squares in only one way, i.e., 73136704 + 56250000 = 8552^2 + 7500^2 .

It is a nialpdrome in base 8.

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 as a sum of consecutive naturals, namely, 4043319 + ... + 4043350.

It is an arithmetic number, because the mean of its divisors is an integer number (25068677).

Almost surely, 2^129386704 is an apocalyptic number.

It is an amenable number.

129386704 is a deficient number, since it is larger than the sum of its proper divisors (121300066).

129386704 is an equidigital number, since it uses as much as digits as its factorization.

129386704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8086677 (or 8086671 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 129386704 is about 11374.8276470459. The cubic root of 129386704 is about 505.7818220239.

The spelling of 129386704 in words is "one hundred twenty-nine million, three hundred eighty-six thousand, seven hundred four".