389638 has 4 divisors (see below), whose sum is σ = 584460. Its totient is φ = 194818.

The previous prime is 389629. The next prime is 389651. The reversal of 389638 is 836983.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836983 = 7 ⋅119569.

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

It is a junction number, because it is equal to n+sod(n) for n = 389597 and 389606.

It is a congruent number.

It is an unprimeable number.

389638 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 as a sum of consecutive naturals, namely, 97408 + ... + 97411.

It is an arithmetic number, because the mean of its divisors is an integer number (146115).

2³⁸⁹⁶³⁸ is an apocalyptic number.

389638 is a deficient number, since it is larger than the sum of its proper divisors (194822).

389638 is a wasteful number, since it uses less digits than its factorization.

389638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194821.

The product of its digits is 31104, while the sum is 37.

The square root of 389638 is about 624.2099005943. The cubic root of 389638 is about 73.0388234098.

The spelling of 389638 in words is "three hundred eighty-nine thousand, six hundred thirty-eight".