389138111 has 4 divisors (see below), whose sum is σ = 389650224. Its totient is φ = 388626000.

The previous prime is 389138063. The next prime is 389138129. The reversal of 389138111 is 111831983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389138111 - 2¹⁰ = 389137087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389131111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254915 + ... + 256436.

It is an arithmetic number, because the mean of its divisors is an integer number (97412556).

Almost surely, 2^389138111 is an apocalyptic number.

389138111 is a deficient number, since it is larger than the sum of its proper divisors (512113).

389138111 is an equidigital number, since it uses as much as digits as its factorization.

389138111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512112.

The product of its digits is 5184, while the sum is 35.

The square root of 389138111 is about 19726.5838654340. The cubic root of 389138111 is about 730.0757480665.

The spelling of 389138111 in words is "three hundred eighty-nine million, one hundred thirty-eight thousand, one hundred eleven".