384890 has 16 divisors (see below), whose sum is σ = 756000. Its totient is φ = 139920.

The previous prime is 384889. The next prime is 384907. The reversal of 384890 is 98483.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 384890.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1640 + ... + 1859.

It is an arithmetic number, because the mean of its divisors is an integer number (47250).

2³⁸⁴⁸⁹⁰ is an apocalyptic number.

384890 is a deficient number, since it is larger than the sum of its proper divisors (371110).

384890 is a wasteful number, since it uses less digits than its factorization.

384890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3517.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 384890 is about 620.3950354411. The cubic root of 384890 is about 72.7409344600.

The spelling of 384890 in words is "three hundred eighty-four thousand, eight hundred ninety".