135296209 has 2 divisors, whose sum is σ = 135296210. Its totient is φ = 135296208.

The previous prime is 135296191. The next prime is 135296261. The reversal of 135296209 is 902692531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130873600 + 4422609 = 11440^2 + 2103^2 .

It is a cyclic number.

It is not a de Polignac number, because 135296209 - 2¹¹ = 135294161 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135296299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67648104 + 67648105.

It is an arithmetic number, because the mean of its divisors is an integer number (67648105).

Almost surely, 2^135296209 is an apocalyptic number.

It is an amenable number.

135296209 is a deficient number, since it is larger than the sum of its proper divisors (1).

135296209 is an equidigital number, since it uses as much as digits as its factorization.

135296209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 135296209 is about 11631.6898600332. The cubic root of 135296209 is about 513.3677027174.

The spelling of 135296209 in words is "one hundred thirty-five million, two hundred ninety-six thousand, two hundred nine".