389618 has 4 divisors (see below), whose sum is σ = 584430. Its totient is φ = 194808.

The previous prime is 389591. The next prime is 389621. The reversal of 389618 is 816983.

389618 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 816983 = 23 ⋅35521.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 49729 = 583^2 + 223^2 .

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97403 + ... + 97406.

2³⁸⁹⁶¹⁸ is an apocalyptic number.

389618 is a deficient number, since it is larger than the sum of its proper divisors (194812).

389618 is a wasteful number, since it uses less digits than its factorization.

389618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194811.

The product of its digits is 10368, while the sum is 35.

The square root of 389618 is about 624.1938801366. The cubic root of 389618 is about 73.0375737015.

The spelling of 389618 in words is "three hundred eighty-nine thousand, six hundred eighteen".