129789613 has 2 divisors, whose sum is σ = 129789614. Its totient is φ = 129789612.

The previous prime is 129789601. The next prime is 129789619. The reversal of 129789613 is 316987921.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 106874244 + 22915369 = 10338^2 + 4787^2 .

It is a cyclic number.

It is not a de Polignac number, because 129789613 - 2⁵ = 129789581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129789619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64894806 + 64894807.

It is an arithmetic number, because the mean of its divisors is an integer number (64894807).

Almost surely, 2^129789613 is an apocalyptic number.

It is an amenable number.

129789613 is a deficient number, since it is larger than the sum of its proper divisors (1).

129789613 is an equidigital number, since it uses as much as digits as its factorization.

129789613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 163296, while the sum is 46.

The square root of 129789613 is about 11392.5244349091. The cubic root of 129789613 is about 506.3062779888.

The spelling of 129789613 in words is "one hundred twenty-nine million, seven hundred eighty-nine thousand, six hundred thirteen".