389916811 has 4 divisors (see below), whose sum is σ = 412853112. Its totient is φ = 366980512.

The previous prime is 389916799. The next prime is 389916827. The reversal of 389916811 is 118619983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118619983 = 19 ⋅6243157.

It is a cyclic number.

It is not a de Polignac number, because 389916811 - 2⁹ = 389916299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389916851) 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, 11468125 + ... + 11468158.

It is an arithmetic number, because the mean of its divisors is an integer number (103213278).

Almost surely, 2^389916811 is an apocalyptic number.

389916811 is a deficient number, since it is larger than the sum of its proper divisors (22936301).

389916811 is a wasteful number, since it uses less digits than its factorization.

389916811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22936300.

The product of its digits is 93312, while the sum is 46.

The square root of 389916811 is about 19746.3113264225. The cubic root of 389916811 is about 730.5624057825.

The spelling of 389916811 in words is "three hundred eighty-nine million, nine hundred sixteen thousand, eight hundred eleven".