389516911 has 4 divisors (see below), whose sum is σ = 445162192. Its totient is φ = 333871632.

The previous prime is 389516909. The next prime is 389516923. The reversal of 389516911 is 119615983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119615983 = 41 ⋅2917463.

It is a cyclic number.

It is not a de Polignac number, because 389516911 - 2¹ = 389516909 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 (389516111) 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, 27822630 + ... + 27822643.

It is an arithmetic number, because the mean of its divisors is an integer number (111290548).

Almost surely, 2^389516911 is an apocalyptic number.

389516911 is a deficient number, since it is larger than the sum of its proper divisors (55645281).

389516911 is an equidigital number, since it uses as much as digits as its factorization.

389516911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55645280.

The product of its digits is 58320, while the sum is 43.

The square root of 389516911 is about 19736.1827869525. The cubic root of 389516911 is about 730.3125645924.

The spelling of 389516911 in words is "three hundred eighty-nine million, five hundred sixteen thousand, nine hundred eleven".