138000887 has 2 divisors, whose sum is σ = 138000888. Its totient is φ = 138000886.

The previous prime is 138000847. The next prime is 138000901. The reversal of 138000887 is 788000831.

It is a strong prime.

It is an emirp because it is prime and its reverse (788000831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 138000887 - 2¹⁶ = 137935351 is a prime.

It is equal to p_7805537 and since 138000887 and 7805537 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138000827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69000443 + 69000444.

It is an arithmetic number, because the mean of its divisors is an integer number (69000444).

Almost surely, 2^138000887 is an apocalyptic number.

138000887 is a deficient number, since it is larger than the sum of its proper divisors (1).

138000887 is an equidigital number, since it uses as much as digits as its factorization.

138000887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 138000887 is about 11747.3778776372. The cubic root of 138000887 is about 516.7660324091.

The spelling of 138000887 in words is "one hundred thirty-eight million, eight hundred eighty-seven", and thus it is an aban number.