135336809 has 2 divisors, whose sum is σ = 135336810. Its totient is φ = 135336808.

The previous prime is 135336767. The next prime is 135336827. The reversal of 135336809 is 908633531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134490409 + 846400 = 11597^2 + 920^2 .

It is a cyclic number.

It is not a de Polignac number, because 135336809 - 2¹⁶ = 135271273 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (135332809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67668404 + 67668405.

It is an arithmetic number, because the mean of its divisors is an integer number (67668405).

Almost surely, 2^135336809 is an apocalyptic number.

It is an amenable number.

135336809 is a deficient number, since it is larger than the sum of its proper divisors (1).

135336809 is an equidigital number, since it uses as much as digits as its factorization.

135336809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 135336809 is about 11633.4349613517. The cubic root of 135336809 is about 513.4190484385.

The spelling of 135336809 in words is "one hundred thirty-five million, three hundred thirty-six thousand, eight hundred nine".