384389 has 4 divisors (see below), whose sum is σ = 404640. Its totient is φ = 364140.

The previous prime is 384383. The next prime is 384403. The reversal of 384389 is 983483.

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, and also an emirpimes, since its reverse is a distinct semiprime: 983483 = 97 ⋅10139.

It is a cyclic number.

It is not a de Polignac number, because 384389 - 2⁸ = 384133 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 (384383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10097 + ... + 10134.

It is an arithmetic number, because the mean of its divisors is an integer number (101160).

2³⁸⁴³⁸⁹ is an apocalyptic number.

It is an amenable number.

384389 is a deficient number, since it is larger than the sum of its proper divisors (20251).

384389 is a wasteful number, since it uses less digits than its factorization.

384389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20250.

The product of its digits is 20736, while the sum is 35.

The square root of 384389 is about 619.9911289688. The cubic root of 384389 is about 72.7093591771.

The spelling of 384389 in words is "three hundred eighty-four thousand, three hundred eighty-nine".