389444427 has 24 divisors (see below), whose sum is σ = 578039280. Its totient is φ = 252564480.

The previous prime is 389444399. The next prime is 389444431. The reversal of 389444427 is 724444983.

It is not a de Polignac number, because 389444427 - 2¹⁰ = 389443403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389444437) 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 23 ways as a sum of consecutive naturals, for example, 47727 + ... + 55287.

It is an arithmetic number, because the mean of its divisors is an integer number (24084970).

Almost surely, 2^389444427 is an apocalyptic number.

389444427 is a deficient number, since it is larger than the sum of its proper divisors (188594853).

389444427 is a wasteful number, since it uses less digits than its factorization.

389444427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7723 (or 7720 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 389444427 is about 19734.3463788391. The cubic root of 389444427 is about 730.2672612450.

The spelling of 389444427 in words is "three hundred eighty-nine million, four hundred forty-four thousand, four hundred twenty-seven".