129485704 has 8 divisors (see below), whose sum is σ = 242785710. Its totient is φ = 64742848.

The previous prime is 129485689. The next prime is 129485711. The reversal of 129485704 is 407584921.

It can be written as a sum of positive squares in only one way, i.e., 88397604 + 41088100 = 9402^2 + 6410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8092849 + ... + 8092864.

Almost surely, 2^129485704 is an apocalyptic number.

It is an amenable number.

129485704 is a deficient number, since it is larger than the sum of its proper divisors (113300006).

129485704 is a wasteful number, since it uses less digits than its factorization.

129485704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16185719 (or 16185715 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 129485704 is about 11379.1785292261. The cubic root of 129485704 is about 505.9107884821.

The spelling of 129485704 in words is "one hundred twenty-nine million, four hundred eighty-five thousand, seven hundred four".