129700806 has 8 divisors (see below), whose sum is σ = 259401624. Its totient is φ = 43233600.

The previous prime is 129700801. The next prime is 129700829. The reversal of 129700806 is 608007921.

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

129700806 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129700801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10808395 + ... + 10808406.

It is an arithmetic number, because the mean of its divisors is an integer number (32425203).

Almost surely, 2^129700806 is an apocalyptic number.

129700806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129700806 is a wasteful number, since it uses less digits than its factorization.

129700806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21616806.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 129700806 is about 11388.6261682435. The cubic root of 129700806 is about 506.1907736231.

The spelling of 129700806 in words is "one hundred twenty-nine million, seven hundred thousand, eight hundred six".