389663 has 2 divisors, whose sum is σ = 389664. Its totient is φ = 389662.

The previous prime is 389659. The next prime is 389687. The reversal of 389663 is 366983.

It is a weak prime.

It is an emirp because it is prime and its reverse (366983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389663 - 2² = 389659 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a d-powerful number, because it can be written as 3¹¹ + 8⁵ + 6⁴ + 9 + 6⁴ + 3¹¹ .

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194831 + 194832.

It is an arithmetic number, because the mean of its divisors is an integer number (194832).

2³⁸⁹⁶⁶³ is an apocalyptic number.

389663 is a deficient number, since it is larger than the sum of its proper divisors (1).

389663 is an equidigital number, since it uses as much as digits as its factorization.

389663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 389663 is about 624.2299255883. The cubic root of 389663 is about 73.0403854849.

The spelling of 389663 in words is "three hundred eighty-nine thousand, six hundred sixty-three".