138044044 has 24 divisors (see below), whose sum is σ = 254970800. Its totient is φ = 65214720.

The previous prime is 138044021. The next prime is 138044051. The reversal of 138044044 is 440440831.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 28864 + ... + 33304.

Almost surely, 2^138044044 is an apocalyptic number.

It is an amenable number.

138044044 is a deficient number, since it is larger than the sum of its proper divisors (116926756).

138044044 is a wasteful number, since it uses less digits than its factorization.

138044044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873 (or 4871 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 138044044 is about 11749.2146120496. The cubic root of 138044044 is about 516.8198961866.

Adding to 138044044 its reverse (440440831), we get a palindrome (578484875).

The spelling of 138044044 in words is "one hundred thirty-eight million, forty-four thousand, forty-four".