129413709 has 12 divisors (see below), whose sum is σ = 195058656. Its totient is φ = 82524552.

The previous prime is 129413681. The next prime is 129413723. The reversal of 129413709 is 907314921.

It is not a de Polignac number, because 129413709 - 2⁵ = 129413677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129413509) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312387 + ... + 312800.

It is an arithmetic number, because the mean of its divisors is an integer number (16254888).

Almost surely, 2^129413709 is an apocalyptic number.

It is an amenable number.

129413709 is a deficient number, since it is larger than the sum of its proper divisors (65644947).

129413709 is a wasteful number, since it uses less digits than its factorization.

129413709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625216 (or 625213 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 129413709 is about 11376.0146360665. The cubic root of 129413709 is about 505.8170077308.

The spelling of 129413709 in words is "one hundred twenty-nine million, four hundred thirteen thousand, seven hundred nine".