138874808 has 16 divisors (see below), whose sum is σ = 260842680. Its totient is φ = 69316768.

The previous prime is 138874777. The next prime is 138874817. The reversal of 138874808 is 808478831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10091 + ... + 19482.

Almost surely, 2^138874808 is an apocalyptic number.

It is an amenable number.

138874808 is a deficient number, since it is larger than the sum of its proper divisors (121967872).

138874808 is a wasteful number, since it uses less digits than its factorization.

138874808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30166 (or 30162 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 47.

The square root of 138874808 is about 11784.5156031124. The cubic root of 138874808 is about 517.8545826959.

The spelling of 138874808 in words is "one hundred thirty-eight million, eight hundred seventy-four thousand, eight hundred eight".