388379911 has 2 divisors, whose sum is σ = 388379912. Its totient is φ = 388379910.

The previous prime is 388379903. The next prime is 388379917. The reversal of 388379911 is 119973883.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 388379911 - 2³ = 388379903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388379917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194189955 + 194189956.

It is an arithmetic number, because the mean of its divisors is an integer number (194189956).

Almost surely, 2^388379911 is an apocalyptic number.

388379911 is a deficient number, since it is larger than the sum of its proper divisors (1).

388379911 is an equidigital number, since it uses as much as digits as its factorization.

388379911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The square root of 388379911 is about 19707.3567735503. The cubic root of 388379911 is about 729.6012778499.

The spelling of 388379911 in words is "three hundred eighty-eight million, three hundred seventy-nine thousand, nine hundred eleven".