384009 has 8 divisors (see below), whose sum is σ = 539040. Its totient is φ = 242496.

The previous prime is 384001. The next prime is 384017. The reversal of 384009 is 900483.

It is an interprime number because it is at equal distance from previous prime (384001) and next prime (384017).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 384009 - 2³ = 384001 is a prime.

384009 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 384009.

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 7 ways as a sum of consecutive naturals, for example, 3312 + ... + 3425.

It is an arithmetic number, because the mean of its divisors is an integer number (67380).

2³⁸⁴⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

384009 is a deficient number, since it is larger than the sum of its proper divisors (155031).

384009 is a wasteful number, since it uses less digits than its factorization.

384009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6759.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 384009 is about 619.6845971944. The cubic root of 384009 is about 72.6853915590.

The spelling of 384009 in words is "three hundred eighty-four thousand, nine".