138959359 has 16 divisors (see below), whose sum is σ = 177281280. Its totient is φ = 105759360.

The previous prime is 138959351. The next prime is 138959363. The reversal of 138959359 is 953959831.

It is a happy number.

It is not a de Polignac number, because 138959359 - 2³ = 138959351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138959351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17674 + ... + 24295.

It is an arithmetic number, because the mean of its divisors is an integer number (11080080).

Almost surely, 2^138959359 is an apocalyptic number.

138959359 is a deficient number, since it is larger than the sum of its proper divisors (38321921).

138959359 is a wasteful number, since it uses less digits than its factorization.

138959359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42030.

The product of its digits is 1312200, while the sum is 52.

The square root of 138959359 is about 11788.1024342343. The cubic root of 138959359 is about 517.9596563244.

The spelling of 138959359 in words is "one hundred thirty-eight million, nine hundred fifty-nine thousand, three hundred fifty-nine".