389378 has 12 divisors (see below), whose sum is σ = 642390. Its totient is φ = 176880.

The previous prime is 389369. The next prime is 389381. The reversal of 389378 is 873983.

It can be written as a sum of positive squares in only one way, i.e., 223729 + 165649 = 473^2 + 407^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389378.

It is an unprimeable number.

389378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 563 + ... + 1046.

2³⁸⁹³⁷⁸ is an apocalyptic number.

389378 is a deficient number, since it is larger than the sum of its proper divisors (253012).

389378 is a wasteful number, since it uses less digits than its factorization.

389378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1622 counting only the distinct ones).

The product of its digits is 36288, while the sum is 38.

The square root of 389378 is about 624.0016025620. The cubic root of 389378 is about 73.0225738657.

It can be divided in two parts, 389 and 378, that added together give a palindrome (767).

The spelling of 389378 in words is "three hundred eighty-nine thousand, three hundred seventy-eight".