138889014 has 32 divisors (see below), whose sum is σ = 320858496. Its totient is φ = 39611520.

The previous prime is 138889013. The next prime is 138889063. The reversal of 138889014 is 410988831.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138889013) 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 15 ways as a sum of consecutive naturals, for example, 60772 + ... + 63015.

It is an arithmetic number, because the mean of its divisors is an integer number (10026828).

Almost surely, 2^138889014 is an apocalyptic number.

138889014 is an abundant number, since it is smaller than the sum of its proper divisors (181969482).

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

138889014 is a wasteful number, since it uses less digits than its factorization.

138889014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123820.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 138889014 is about 11785.1183277895. The cubic root of 138889014 is about 517.8722398253.

The spelling of 138889014 in words is "one hundred thirty-eight million, eight hundred eighty-nine thousand, fourteen".