135844 has 6 divisors (see below), whose sum is σ = 237734. Its totient is φ = 67920.

The previous prime is 135841. The next prime is 135851. The reversal of 135844 is 448531.

It can be written as a sum of positive squares in only one way, i.e., 82944 + 52900 = 288^2 + 230^2 .

It is not an unprimeable number, because it can be changed into a prime (135841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16977 + ... + 16984.

2¹³⁵⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

135844 is a deficient number, since it is larger than the sum of its proper divisors (101890).

135844 is a wasteful number, since it uses less digits than its factorization.

135844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33965 (or 33963 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 135844 is about 368.5702104077. The cubic root of 135844 is about 51.4059615487.

It can be divided in two parts, 135 and 844, that added together give a palindrome (979).

The spelling of 135844 in words is "one hundred thirty-five thousand, eight hundred forty-four".