389911 has 2 divisors, whose sum is σ = 389912. Its totient is φ = 389910.

The previous prime is 389903. The next prime is 389923. The reversal of 389911 is 119983.

It is a weak prime.

It is an emirp because it is prime and its reverse (119983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389911 - 2³ = 389903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194955 + 194956.

It is an arithmetic number, because the mean of its divisors is an integer number (194956).

2³⁸⁹⁹¹¹ is an apocalyptic number.

389911 is a deficient number, since it is larger than the sum of its proper divisors (1).

389911 is an equidigital number, since it uses as much as digits as its factorization.

389911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 31.

The square root of 389911 is about 624.4285387456. The cubic root of 389911 is about 73.0558776530.

The spelling of 389911 in words is "three hundred eighty-nine thousand, nine hundred eleven".