129579029 has 2 divisors, whose sum is σ = 129579030. Its totient is φ = 129579028.

The previous prime is 129579013. The next prime is 129579041. The reversal of 129579029 is 920975921.

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., 118222129 + 11356900 = 10873^2 + 3370^2 .

It is an emirp because it is prime and its reverse (920975921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 129579029 - 2⁴ = 129579013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129579089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64789514 + 64789515.

It is an arithmetic number, because the mean of its divisors is an integer number (64789515).

Almost surely, 2^129579029 is an apocalyptic number.

It is an amenable number.

129579029 is a deficient number, since it is larger than the sum of its proper divisors (1).

129579029 is an equidigital number, since it uses as much as digits as its factorization.

129579029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 129579029 is about 11383.2784820543. The cubic root of 129579029 is about 506.0323019889.

The spelling of 129579029 in words is "one hundred twenty-nine million, five hundred seventy-nine thousand, twenty-nine".