138959104 has 36 divisors (see below), whose sum is σ = 280927360. Its totient is φ = 68590080.

The previous prime is 138959083. The next prime is 138959111. The reversal of 138959104 is 401959831.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 3 ways as a sum of consecutive naturals, for example, 16789 + ... + 23659.

Almost surely, 2^138959104 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 138959104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140463680).

138959104 is an abundant number, since it is smaller than the sum of its proper divisors (141968256).

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

138959104 is an frugal number, since it uses more digits than its factorization.

138959104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6966 (or 6952 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 138959104 is about 11788.0916182391. The cubic root of 138959104 is about 517.9593394936.

The spelling of 138959104 in words is "one hundred thirty-eight million, nine hundred fifty-nine thousand, one hundred four".