129576539 has 2 divisors, whose sum is σ = 129576540. Its totient is φ = 129576538.

The previous prime is 129576527. The next prime is 129576583. The reversal of 129576539 is 935675921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129576539 - 2⁸ = 129576283 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 129576493 and 129576502.

It is not a weakly prime, because it can be changed into another prime (129576589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64788269 + 64788270.

It is an arithmetic number, because the mean of its divisors is an integer number (64788270).

Almost surely, 2^129576539 is an apocalyptic number.

129576539 is a deficient number, since it is larger than the sum of its proper divisors (1).

129576539 is an equidigital number, since it uses as much as digits as its factorization.

129576539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 510300, while the sum is 47.

The square root of 129576539 is about 11383.1691105772. The cubic root of 129576539 is about 506.0290606503.

The spelling of 129576539 in words is "one hundred twenty-nine million, five hundred seventy-six thousand, five hundred thirty-nine".