390933 has 8 divisors (see below), whose sum is σ = 579200. Its totient is φ = 260604.

The previous prime is 390893. The next prime is 390953. The reversal of 390933 is 339093.

It is not a de Polignac number, because 390933 - 2⁶ = 390869 is a prime.

It is a super-2 number, since 2×390933² = 305657220978, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 14479 = 390933 / (3 + 9 + 0 + 9 + 3 + 3).

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 390897 and 390906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390953) 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, 7213 + ... + 7266.

It is an arithmetic number, because the mean of its divisors is an integer number (72400).

2³⁹⁰⁹³³ is an apocalyptic number.

It is an amenable number.

390933 is a deficient number, since it is larger than the sum of its proper divisors (188267).

390933 is a wasteful number, since it uses less digits than its factorization.

390933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14488 (or 14482 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 27.

The square root of 390933 is about 625.2463514488. The cubic root of 390933 is about 73.1196511538.

The spelling of 390933 in words is "three hundred ninety thousand, nine hundred thirty-three".