138775422 has 16 divisors (see below), whose sum is σ = 289618560. Its totient is φ = 44247192.

The previous prime is 138775397. The next prime is 138775451. The reversal of 138775422 is 224577831.

138775422 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502672 + ... + 502947.

It is an arithmetic number, because the mean of its divisors is an integer number (18101160).

Almost surely, 2^138775422 is an apocalyptic number.

138775422 is an abundant number, since it is smaller than the sum of its proper divisors (150843138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138775422 is a wasteful number, since it uses less digits than its factorization.

138775422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005647.

The product of its digits is 94080, while the sum is 39.

The square root of 138775422 is about 11780.2980437678. The cubic root of 138775422 is about 517.7310187014.

The spelling of 138775422 in words is "one hundred thirty-eight million, seven hundred seventy-five thousand, four hundred twenty-two".