387911 has 2 divisors, whose sum is σ = 387912. Its totient is φ = 387910.

The previous prime is 387857. The next prime is 387913. The reversal of 387911 is 119783.

It is a strong prime.

It is an emirp because it is prime and its reverse (119783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 387911 - 2¹⁰ = 386887 is a prime.

It is a Sophie Germain prime.

Together with 387913, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387913) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193955 + 193956.

It is an arithmetic number, because the mean of its divisors is an integer number (193956).

2³⁸⁷⁹¹¹ is an apocalyptic number.

387911 is a deficient number, since it is larger than the sum of its proper divisors (1).

387911 is an equidigital number, since it uses as much as digits as its factorization.

387911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 29.

The square root of 387911 is about 622.8250155541. The cubic root of 387911 is about 72.9307531243.

The spelling of 387911 in words is "three hundred eighty-seven thousand, nine hundred eleven".