393884 has 12 divisors (see below), whose sum is σ = 701400. Its totient is φ = 193488.

The previous prime is 393871. The next prime is 393901. The reversal of 393884 is 488393.

It is a super-3 number, since 3×393884³ = 183326933326293312, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599 + ... + 1070.

It is an arithmetic number, because the mean of its divisors is an integer number (58450).

2³⁹³⁸⁸⁴ is an apocalyptic number.

It is an amenable number.

393884 is a deficient number, since it is larger than the sum of its proper divisors (307516).

393884 is a wasteful number, since it uses less digits than its factorization.

393884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732 (or 1730 counting only the distinct ones).

The product of its digits is 20736, while the sum is 35.

The square root of 393884 is about 627.6017845736. The cubic root of 393884 is about 73.3031740078.

The spelling of 393884 in words is "three hundred ninety-three thousand, eight hundred eighty-four".