138559792 has 80 divisors (see below), whose sum is σ = 330460992. Its totient is φ = 54927360.

The previous prime is 138559769. The next prime is 138559829. The reversal of 138559792 is 297955831.

138559792 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115548 + ... + 116740.

Almost surely, 2^138559792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138559792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165230496).

138559792 is an abundant number, since it is smaller than the sum of its proper divisors (191901200).

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

138559792 is a wasteful number, since it uses less digits than its factorization.

138559792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1280 counting only the distinct ones).

The product of its digits is 680400, while the sum is 49.

The square root of 138559792 is about 11771.1423404868. The cubic root of 138559792 is about 517.4627286124.

The spelling of 138559792 in words is "one hundred thirty-eight million, five hundred fifty-nine thousand, seven hundred ninety-two".