389578 has 8 divisors (see below), whose sum is σ = 667872. Its totient is φ = 166956.

The previous prime is 389569. The next prime is 389579. The reversal of 389578 is 875983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 389578.

It is not an unprimeable number, because it can be changed into a prime (389579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13900 + ... + 13927.

It is an arithmetic number, because the mean of its divisors is an integer number (83484).

2³⁸⁹⁵⁷⁸ is an apocalyptic number.

389578 is a deficient number, since it is larger than the sum of its proper divisors (278294).

389578 is a wasteful number, since it uses less digits than its factorization.

389578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27836.

The product of its digits is 60480, while the sum is 40.

The square root of 389578 is about 624.1618379876. The cubic root of 389578 is about 73.0350741567.

It can be divided in two parts, 3895 and 78, that multiplied together give a triangular number (303810 = T₇₇₉).

The spelling of 389578 in words is "three hundred eighty-nine thousand, five hundred seventy-eight".