129263539 has 2 divisors, whose sum is σ = 129263540. Its totient is φ = 129263538.

The previous prime is 129263531. The next prime is 129263567. The reversal of 129263539 is 935362921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 129263539 - 2³ = 129263531 is a prime.

It is not a weakly prime, because it can be changed into another prime (129263531) 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, 64631769 + 64631770.

It is an arithmetic number, because the mean of its divisors is an integer number (64631770).

Almost surely, 2^129263539 is an apocalyptic number.

129263539 is a deficient number, since it is larger than the sum of its proper divisors (1).

129263539 is an equidigital number, since it uses as much as digits as its factorization.

129263539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 40.

The square root of 129263539 is about 11369.4124298488. The cubic root of 129263539 is about 505.6212841607.

The spelling of 129263539 in words is "one hundred twenty-nine million, two hundred sixty-three thousand, five hundred thirty-nine".