138000886 has 4 divisors (see below), whose sum is σ = 207001332. Its totient is φ = 69000442.

The previous prime is 138000847. The next prime is 138000887. The reversal of 138000886 is 688000831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 688000831 = 7 ⋅98285833.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138000887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34500220 + ... + 34500223.

It is an arithmetic number, because the mean of its divisors is an integer number (51750333).

Almost surely, 2^138000886 is an apocalyptic number.

138000886 is a deficient number, since it is larger than the sum of its proper divisors (69000446).

138000886 is an equidigital number, since it uses as much as digits as its factorization.

138000886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69000445.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 138000886 is about 11747.3778350745. The cubic root of 138000886 is about 516.7660311609.

Subtracting 138000886 from its reverse (688000831), we obtain a palindrome (549999945).

The spelling of 138000886 in words is "one hundred thirty-eight million, eight hundred eighty-six", and thus it is an aban number.