129313806 has 16 divisors (see below), whose sum is σ = 262171344. Its totient is φ = 42513984.

The previous prime is 129313787. The next prime is 129313817. The reversal of 129313806 is 608313921.

It is a congruent number.

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, 147181 + ... + 148056.

It is an arithmetic number, because the mean of its divisors is an integer number (16385709).

Almost surely, 2^129313806 is an apocalyptic number.

129313806 is an abundant number, since it is smaller than the sum of its proper divisors (132857538).

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

129313806 is a wasteful number, since it uses less digits than its factorization.

129313806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295315.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 129313806 is about 11371.6228393312. The cubic root of 129313806 is about 505.6868163581.

The spelling of 129313806 in words is "one hundred twenty-nine million, three hundred thirteen thousand, eight hundred six".