138844 has 12 divisors (see below), whose sum is σ = 246064. Its totient is φ = 68544.

The previous prime is 138841. The next prime is 138863. The reversal of 138844 is 448831.

138844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138841) 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, 244 + ... + 580.

2¹³⁸⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

138844 is a deficient number, since it is larger than the sum of its proper divisors (107220).

138844 is a wasteful number, since it uses less digits than its factorization.

138844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444 (or 442 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 138844 is about 372.6177666188. The cubic root of 138844 is about 51.7816286228.

The spelling of 138844 in words is "one hundred thirty-eight thousand, eight hundred forty-four".