138679875 has 48 divisors (see below), whose sum is σ = 252169632. Its totient is φ = 73320000.

The previous prime is 138679867. The next prime is 138679907. The reversal of 138679875 is 578976831.

It is not a de Polignac number, because 138679875 - 2³ = 138679867 is a prime.

Its product of digits (2540160) is a multiple of the sum of its prime divisors (1080).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146905 + ... + 147845.

It is an arithmetic number, because the mean of its divisors is an integer number (5253534).

Almost surely, 2^138679875 is an apocalyptic number.

138679875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138679875 is a deficient number, since it is larger than the sum of its proper divisors (113489757).

138679875 is a wasteful number, since it uses less digits than its factorization.

138679875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093 (or 1080 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 138679875 is about 11776.2419727178. The cubic root of 138679875 is about 517.6121720014.

The spelling of 138679875 in words is "one hundred thirty-eight million, six hundred seventy-nine thousand, eight hundred seventy-five".