129905713 has 6 divisors (see below), whose sum is σ = 151114866. Its totient is φ = 111347712.

The previous prime is 129905693. The next prime is 129905719. The reversal of 129905713 is 317509921.

It can be written as a sum of positive squares in only one way, i.e., 97278769 + 32626944 = 9863^2 + 5712^2 .

It is not a de Polignac number, because 129905713 - 2¹⁷ = 129774641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (129905719) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1325520 + ... + 1325617.

It is an arithmetic number, because the mean of its divisors is an integer number (25185811).

Almost surely, 2^129905713 is an apocalyptic number.

It is an amenable number.

129905713 is a deficient number, since it is larger than the sum of its proper divisors (21209153).

129905713 is an equidigital number, since it uses as much as digits as its factorization.

129905713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2651151 (or 2651144 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 129905713 is about 11397.6187425269. The cubic root of 129905713 is about 506.4572008012.

The spelling of 129905713 in words is "one hundred twenty-nine million, nine hundred five thousand, seven hundred thirteen".