384390 has 24 divisors (see below), whose sum is σ = 999648. Its totient is φ = 102480.

The previous prime is 384383. The next prime is 384403. The reversal of 384390 is 93483.

384390 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2046 + ... + 2225.

It is an arithmetic number, because the mean of its divisors is an integer number (41652).

2³⁸⁴³⁹⁰ is an apocalyptic number.

384390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

384390 is an abundant number, since it is smaller than the sum of its proper divisors (615258).

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

384390 is a wasteful number, since it uses less digits than its factorization.

384390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4284 (or 4281 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 384390 is about 619.9919354314. The cubic root of 384390 is about 72.7094222289.

The spelling of 384390 in words is "three hundred eighty-four thousand, three hundred ninety".