138875859 has 6 divisors (see below), whose sum is σ = 200598476. Its totient is φ = 92583900.

The previous prime is 138875843. The next prime is 138875879. The reversal of 138875859 is 958578831.

It is not a de Polignac number, because 138875859 - 2⁴ = 138875843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138875819) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7715317 + ... + 7715334.

Almost surely, 2^138875859 is an apocalyptic number.

138875859 is a deficient number, since it is larger than the sum of its proper divisors (61722617).

138875859 is a wasteful number, since it uses less digits than its factorization.

138875859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15430657 (or 15430654 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 54.

The square root of 138875859 is about 11784.5601954422. The cubic root of 138875859 is about 517.8558890615.

The spelling of 138875859 in words is "one hundred thirty-eight million, eight hundred seventy-five thousand, eight hundred fifty-nine".