129489713 has 2 divisors, whose sum is σ = 129489714. Its totient is φ = 129489712.

The previous prime is 129489709. The next prime is 129489721. The reversal of 129489713 is 317984921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124724224 + 4765489 = 11168^2 + 2183^2 .

It is an emirp because it is prime and its reverse (317984921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129489713 - 2² = 129489709 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (129489733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64744856 + 64744857.

It is an arithmetic number, because the mean of its divisors is an integer number (64744857).

Almost surely, 2^129489713 is an apocalyptic number.

It is an amenable number.

129489713 is a deficient number, since it is larger than the sum of its proper divisors (1).

129489713 is an equidigital number, since it uses as much as digits as its factorization.

129489713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 44.

The square root of 129489713 is about 11379.3546829335. The cubic root of 129489713 is about 505.9160095872.

The spelling of 129489713 in words is "one hundred twenty-nine million, four hundred eighty-nine thousand, seven hundred thirteen".