389911121111 has 4 divisors (see below), whose sum is σ = 389914993392. Its totient is φ = 389907248832.

The previous prime is 389911120969. The next prime is 389911121167. The reversal of 389911121111 is 111121119983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111121119983 = 1301 ⋅85412083.

It is a cyclic number.

It is not a de Polignac number, because 389911121111 - 2¹⁰ = 389911120087 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 (389911121911) 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 in 3 ways as a sum of consecutive naturals, for example, 1780955 + ... + 1987868.

It is an arithmetic number, because the mean of its divisors is an integer number (97478748348).

Almost surely, 2^389911121111 is an apocalyptic number.

389911121111 is a deficient number, since it is larger than the sum of its proper divisors (3872281).

389911121111 is a wasteful number, since it uses less digits than its factorization.

389911121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3872280.

The product of its digits is 3888, while the sum is 38.

The spelling of 389911121111 in words is "three hundred eighty-nine billion, nine hundred eleven million, one hundred twenty-one thousand, one hundred eleven".