389320845 has 16 divisors (see below), whose sum is σ = 639749760. Its totient is φ = 202025664.

The previous prime is 389320831. The next prime is 389320873. The reversal of 389320845 is 548023983.

It is not a de Polignac number, because 389320845 - 2¹³ = 389312653 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 389320797 and 389320806.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350185 + ... + 351294.

It is an arithmetic number, because the mean of its divisors is an integer number (39984360).

Almost surely, 2^389320845 is an apocalyptic number.

It is an amenable number.

389320845 is a deficient number, since it is larger than the sum of its proper divisors (250428915).

389320845 is a wasteful number, since it uses less digits than its factorization.

389320845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701524.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 389320845 is about 19731.2149904662. The cubic root of 389320845 is about 730.1900080862.

The spelling of 389320845 in words is "three hundred eighty-nine million, three hundred twenty thousand, eight hundred forty-five".