138879876 has 36 divisors (see below), whose sum is σ = 334871376. Its totient is φ = 44796240.

The previous prime is 138879863. The next prime is 138879929. The reversal of 138879876 is 678978831.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5511 + ... + 17553.

Almost surely, 2^138879876 is an apocalyptic number.

It is an amenable number.

138879876 is an abundant number, since it is smaller than the sum of its proper divisors (195991500).

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

138879876 is a wasteful number, since it uses less digits than its factorization.

138879876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12112 (or 12079 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 57.

The square root of 138879876 is about 11784.7306290810. The cubic root of 138879876 is about 517.8608820268.

The spelling of 138879876 in words is "one hundred thirty-eight million, eight hundred seventy-nine thousand, eight hundred seventy-six".