138382859 has 4 divisors (see below), whose sum is σ = 138458616. Its totient is φ = 138307104.

The previous prime is 138382837. The next prime is 138382861. The reversal of 138382859 is 958283831.

138382859 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138382859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138382889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35069 + ... + 38814.

It is an arithmetic number, because the mean of its divisors is an integer number (34614654).

Almost surely, 2^138382859 is an apocalyptic number.

138382859 is a deficient number, since it is larger than the sum of its proper divisors (75757).

138382859 is an equidigital number, since it uses as much as digits as its factorization.

138382859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75756.

The product of its digits is 414720, while the sum is 47.

The square root of 138382859 is about 11763.6243989682. The cubic root of 138382859 is about 517.2423779368.

The spelling of 138382859 in words is "one hundred thirty-eight million, three hundred eighty-two thousand, eight hundred fifty-nine".