135591349 has 4 divisors (see below), whose sum is σ = 137814220. Its totient is φ = 133368480.

The previous prime is 135591319. The next prime is 135591367. The reversal of 135591349 is 943195531.

135591349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 943195531 = 211 ⋅4470121.

It can be written as a sum of positive squares in 2 ways, for example, as 12780625 + 122810724 = 3575^2 + 11082^2 .

It is a cyclic number.

It is not a de Polignac number, because 135591349 - 2⁷ = 135591221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135591319) 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, 1111344 + ... + 1111465.

It is an arithmetic number, because the mean of its divisors is an integer number (34453555).

Almost surely, 2^135591349 is an apocalyptic number.

It is an amenable number.

135591349 is a deficient number, since it is larger than the sum of its proper divisors (2222871).

135591349 is an equidigital number, since it uses as much as digits as its factorization.

135591349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222870.

The product of its digits is 72900, while the sum is 40.

The square root of 135591349 is about 11644.3698412580. The cubic root of 135591349 is about 513.7407245105.

The spelling of 135591349 in words is "one hundred thirty-five million, five hundred ninety-one thousand, three hundred forty-nine".