138773884 has 24 divisors (see below), whose sum is σ = 247580928. Its totient is φ = 68046000.

The previous prime is 138773879. The next prime is 138773893. The reversal of 138773884 is 488377831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66237 + ... + 68299.

It is an arithmetic number, because the mean of its divisors is an integer number (10315872).

Almost surely, 2^138773884 is an apocalyptic number.

It is an amenable number.

138773884 is a deficient number, since it is larger than the sum of its proper divisors (108807044).

138773884 is a wasteful number, since it uses less digits than its factorization.

138773884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385 (or 2383 counting only the distinct ones).

The product of its digits is 903168, while the sum is 49.

The square root of 138773884 is about 11780.2327651027. The cubic root of 138773884 is about 517.7291060831.

The spelling of 138773884 in words is "one hundred thirty-eight million, seven hundred seventy-three thousand, eight hundred eighty-four".