138559104 has 48 divisors (see below), whose sum is σ = 398721570. Its totient is φ = 46185984.

The previous prime is 138559087. The next prime is 138559147. The reversal of 138559104 is 401955831.

It can be written as a sum of positive squares in only one way, i.e., 135489600 + 3069504 = 11640^2 + 1752^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58987 + ... + 61290.

Almost surely, 2^138559104 is an apocalyptic number.

It is an amenable number.

138559104 is an abundant number, since it is smaller than the sum of its proper divisors (260162466).

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

138559104 is a wasteful number, since it uses less digits than its factorization.

138559104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120297 (or 120282 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 138559104 is about 11771.1131164389. The cubic root of 138559104 is about 517.4618721472.

The spelling of 138559104 in words is "one hundred thirty-eight million, five hundred fifty-nine thousand, one hundred four".