389747 has 8 divisors (see below), whose sum is σ = 417360. Its totient is φ = 362880.

The previous prime is 389743. The next prime is 389749. The reversal of 389747 is 747983.

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

It is a cyclic number.

It is not a de Polignac number, because 389747 - 2² = 389743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389747.

It is not an unprimeable number, because it can be changed into a prime (389743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247 + ... + 1527.

It is an arithmetic number, because the mean of its divisors is an integer number (52170).

2³⁸⁹⁷⁴⁷ is an apocalyptic number.

389747 is a deficient number, since it is larger than the sum of its proper divisors (27613).

389747 is a wasteful number, since it uses less digits than its factorization.

389747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373.

The product of its digits is 42336, while the sum is 38.

The square root of 389747 is about 624.2972048632. The cubic root of 389747 is about 73.0456335682.

The spelling of 389747 in words is "three hundred eighty-nine thousand, seven hundred forty-seven".