390930 has 32 divisors (see below), whose sum is σ = 955584. Its totient is φ = 102336.

The previous prime is 390893. The next prime is 390953. The reversal of 390930 is 39093.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 390930.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 390930.

It is an unprimeable number.

390930 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 15 ways as a sum of consecutive naturals, for example, 2412 + ... + 2568.

It is an arithmetic number, because the mean of its divisors is an integer number (29862).

2³⁹⁰⁹³⁰ is an apocalyptic number.

390930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

390930 is an abundant number, since it is smaller than the sum of its proper divisors (564654).

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

390930 is a wasteful number, since it uses less digits than its factorization.

390930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250.

The product of its (nonzero) digits is 729, while the sum is 24.

The square root of 390930 is about 625.2439523898. The cubic root of 390930 is about 73.1194641145.

The spelling of 390930 in words is "three hundred ninety thousand, nine hundred thirty".