389824393 has 4 divisors (see below), whose sum is σ = 445513600. Its totient is φ = 334135188.

The previous prime is 389824373. The next prime is 389824397. The reversal of 389824393 is 393428983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 389824393 - 2⁹ = 389823881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389824397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27844593 + ... + 27844606.

It is an arithmetic number, because the mean of its divisors is an integer number (111378400).

Almost surely, 2^389824393 is an apocalyptic number.

It is an amenable number.

389824393 is a deficient number, since it is larger than the sum of its proper divisors (55689207).

389824393 is an equidigital number, since it uses as much as digits as its factorization.

389824393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55689206.

The product of its digits is 1119744, while the sum is 49.

The square root of 389824393 is about 19743.9710544764. The cubic root of 389824393 is about 730.5046819728.

The spelling of 389824393 in words is "three hundred eighty-nine million, eight hundred twenty-four thousand, three hundred ninety-three".