389473189 has 4 divisors (see below), whose sum is σ = 445112224. Its totient is φ = 333834156.

The previous prime is 389473163. The next prime is 389473199. The reversal of 389473189 is 981374983.

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, and also an emirpimes, since its reverse is a distinct semiprime: 981374983 = 4871 ⋅201473.

It is a cyclic number.

It is not a de Polignac number, because 389473189 - 2⁵ = 389473157 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 (389473199) 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, 27819507 + ... + 27819520.

It is an arithmetic number, because the mean of its divisors is an integer number (111278056).

Almost surely, 2^389473189 is an apocalyptic number.

It is an amenable number.

389473189 is a deficient number, since it is larger than the sum of its proper divisors (55639035).

389473189 is an equidigital number, since it uses as much as digits as its factorization.

389473189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55639034.

The product of its digits is 1306368, while the sum is 52.

The square root of 389473189 is about 19735.0750948660. The cubic root of 389473189 is about 730.2852385039.

The spelling of 389473189 in words is "three hundred eighty-nine million, four hundred seventy-three thousand, one hundred eighty-nine".