389321 has 4 divisors (see below), whose sum is σ = 406272. Its totient is φ = 372372.

The previous prime is 389303. The next prime is 389357. The reversal of 389321 is 123983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (389381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8441 + ... + 8486.

It is an arithmetic number, because the mean of its divisors is an integer number (101568).

2³⁸⁹³²¹ is an apocalyptic number.

It is an amenable number.

389321 is a deficient number, since it is larger than the sum of its proper divisors (16951).

389321 is a wasteful number, since it uses less digits than its factorization.

389321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16950.

The product of its digits is 1296, while the sum is 26.

The square root of 389321 is about 623.9559279308. The cubic root of 389321 is about 73.0190104990.

The spelling of 389321 in words is "three hundred eighty-nine thousand, three hundred twenty-one".