135309899 has 2 divisors, whose sum is σ = 135309900. Its totient is φ = 135309898.

The previous prime is 135309893. The next prime is 135309961. The reversal of 135309899 is 998903531.

It is a weak prime.

It is an emirp because it is prime and its reverse (998903531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135309899 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135309893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67654949 + 67654950.

It is an arithmetic number, because the mean of its divisors is an integer number (67654950).

Almost surely, 2^135309899 is an apocalyptic number.

135309899 is a deficient number, since it is larger than the sum of its proper divisors (1).

135309899 is an equidigital number, since it uses as much as digits as its factorization.

135309899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 262440, while the sum is 47.

The square root of 135309899 is about 11632.2783236991. The cubic root of 135309899 is about 513.3850172376.

The spelling of 135309899 in words is "one hundred thirty-five million, three hundred nine thousand, eight hundred ninety-nine".