389365663 has 8 divisors (see below), whose sum is σ = 394093280. Its totient is φ = 384652800.

The previous prime is 389365661. The next prime is 389365681. The reversal of 389365663 is 366563983.

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 389365663 - 2¹ = 389365661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389365661) 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, 54958 + ... + 61636.

It is an arithmetic number, because the mean of its divisors is an integer number (49261660).

Almost surely, 2^389365663 is an apocalyptic number.

389365663 is a deficient number, since it is larger than the sum of its proper divisors (4727617).

389365663 is an equidigital number, since it uses as much as digits as its factorization.

389365663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377.

The product of its digits is 2099520, while the sum is 49.

The square root of 389365663 is about 19732.3506709160. The cubic root of 389365663 is about 730.2180264508.

The spelling of 389365663 in words is "three hundred eighty-nine million, three hundred sixty-five thousand, six hundred sixty-three".