135236099 has 4 divisors (see below), whose sum is σ = 136046064. Its totient is φ = 134426136.

The previous prime is 135236089. The next prime is 135236117. The reversal of 135236099 is 990632531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 990632531 = 7 ⋅141518933.

It is a cyclic number.

It is not a de Polignac number, because 135236099 - 2⁸ = 135235843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135236029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 404732 + ... + 405065.

It is an arithmetic number, because the mean of its divisors is an integer number (34011516).

Almost surely, 2^135236099 is an apocalyptic number.

135236099 is a deficient number, since it is larger than the sum of its proper divisors (809965).

135236099 is an equidigital number, since it uses as much as digits as its factorization.

135236099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809964.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 135236099 is about 11629.1056835855. The cubic root of 135236099 is about 513.2916643619.

The spelling of 135236099 in words is "one hundred thirty-five million, two hundred thirty-six thousand, ninety-nine".