388388888887 has 2 divisors, whose sum is σ = 388388888888. Its totient is φ = 388388888886.

The previous prime is 388388888851. The next prime is 388388888933. The reversal of 388388888887 is 788888883883.

It is a weak prime.

It is an emirp because it is prime and its reverse (788888883883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 388388888887 - 2²³ = 388380500279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388388888827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194194444443 + 194194444444.

It is an arithmetic number, because the mean of its divisors is an integer number (194194444444).

Almost surely, 2^388388888887 is an apocalyptic number.

388388888887 is a deficient number, since it is larger than the sum of its proper divisors (1).

388388888887 is an equidigital number, since it uses as much as digits as its factorization.

388388888887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8455716864, while the sum is 85.

The spelling of 388388888887 in words is "three hundred eighty-eight billion, three hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eighty-seven".