135309539 has 2 divisors, whose sum is σ = 135309540. Its totient is φ = 135309538.

The previous prime is 135309533. The next prime is 135309589. The reversal of 135309539 is 935903531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135309539 - 2⁴ = 135309523 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (135309533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67654769 + 67654770.

It is an arithmetic number, because the mean of its divisors is an integer number (67654770).

Almost surely, 2^135309539 is an apocalyptic number.

135309539 is a deficient number, since it is larger than the sum of its proper divisors (1).

135309539 is an equidigital number, since it uses as much as digits as its factorization.

135309539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54675, while the sum is 38.

The square root of 135309539 is about 11632.2628495061. The cubic root of 135309539 is about 513.3845619401.

The spelling of 135309539 in words is "one hundred thirty-five million, three hundred nine thousand, five hundred thirty-nine".