135595489 has 4 divisors (see below), whose sum is σ = 135672580. Its totient is φ = 135518400.

The previous prime is 135595477. The next prime is 135595501. The reversal of 135595489 is 984595531.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (135595477) and next prime (135595501).

It can be written as a sum of positive squares in 2 ways, for example, as 27123264 + 108472225 = 5208^2 + 10415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135595489 is a prime.

It is a super-2 number, since 2×135595489² = 36772273274298242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135595409) 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, 35844 + ... + 39445.

It is an arithmetic number, because the mean of its divisors is an integer number (33918145).

Almost surely, 2^135595489 is an apocalyptic number.

It is an amenable number.

135595489 is a deficient number, since it is larger than the sum of its proper divisors (77091).

135595489 is an equidigital number, since it uses as much as digits as its factorization.

135595489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77090.

The product of its digits is 972000, while the sum is 49.

The square root of 135595489 is about 11644.5476082156. The cubic root of 135595489 is about 513.7459531257.

The spelling of 135595489 in words is "one hundred thirty-five million, five hundred ninety-five thousand, four hundred eighty-nine".