384005 has 4 divisors (see below), whose sum is σ = 460812. Its totient is φ = 307200.

The previous prime is 384001. The next prime is 384017. The reversal of 384005 is 500483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 277729 + 106276 = 527^2 + 326^2 .

It is not a de Polignac number, because 384005 - 2² = 384001 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 (384001) 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, 38396 + ... + 38405.

It is an arithmetic number, because the mean of its divisors is an integer number (115203).

2³⁸⁴⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

384005 is a deficient number, since it is larger than the sum of its proper divisors (76807).

384005 is an equidigital number, since it uses as much as digits as its factorization.

384005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76806.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 384005 is about 619.6813697377. The cubic root of 384005 is about 72.6851391842.

Adding to 384005 its reverse (500483), we get a palindrome (884488).

The spelling of 384005 in words is "three hundred eighty-four thousand, five".