135408089 has 4 divisors (see below), whose sum is σ = 135478224. Its totient is φ = 135337956.

The previous prime is 135408059. The next prime is 135408137. The reversal of 135408089 is 980804531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 135408089 - 2¹² = 135403993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135408029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32087 + ... + 36060.

It is an arithmetic number, because the mean of its divisors is an integer number (33869556).

Almost surely, 2^135408089 is an apocalyptic number.

It is an amenable number.

135408089 is a deficient number, since it is larger than the sum of its proper divisors (70135).

135408089 is an equidigital number, since it uses as much as digits as its factorization.

135408089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70134.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 135408089 is about 11636.4981416232. The cubic root of 135408089 is about 513.5091694903.

The spelling of 135408089 in words is "one hundred thirty-five million, four hundred eight thousand, eighty-nine".