138845884 has 12 divisors (see below), whose sum is σ = 243990208. Its totient is φ = 69134400.

The previous prime is 138845873. The next prime is 138845887. The reversal of 138845884 is 488548831.

138845884 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 (138845887) 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, 71052 + ... + 72979.

Almost surely, 2^138845884 is an apocalyptic number.

It is an amenable number.

138845884 is a deficient number, since it is larger than the sum of its proper divisors (105144324).

138845884 is a wasteful number, since it uses less digits than its factorization.

138845884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144276 (or 144274 counting only the distinct ones).

The product of its digits is 983040, while the sum is 49.

The square root of 138845884 is about 11783.2883356048. The cubic root of 138845884 is about 517.8186283325.

The spelling of 138845884 in words is "one hundred thirty-eight million, eight hundred forty-five thousand, eight hundred eighty-four".