384904 has 16 divisors (see below), whose sum is σ = 777420. Its totient is φ = 177600.

The previous prime is 384889. The next prime is 384907. The reversal of 384904 is 409483.

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 22500 = 602^2 + 150^2 .

It is not an unprimeable number, because it can be changed into a prime (384907) 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, 1747 + ... + 1954.

2³⁸⁴⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

384904 is an abundant number, since it is smaller than the sum of its proper divisors (392516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

384904 is a wasteful number, since it uses less digits than its factorization.

384904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3720 (or 3716 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 384904 is about 620.4063184720. The cubic root of 384904 is about 72.7418164096.

The spelling of 384904 in words is "three hundred eighty-four thousand, nine hundred four".