388443 has 16 divisors (see below), whose sum is σ = 576000. Its totient is φ = 230880.

The previous prime is 388403. The next prime is 388459. The reversal of 388443 is 344883.

It is not a de Polignac number, because 388443 - 2⁸ = 388187 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 388443.

It is not an unprimeable number, because it can be changed into a prime (388403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2533 + ... + 2681.

It is an arithmetic number, because the mean of its divisors is an integer number (36000).

2³⁸⁸⁴⁴³ is an apocalyptic number.

388443 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

388443 is a deficient number, since it is larger than the sum of its proper divisors (187557).

388443 is a wasteful number, since it uses less digits than its factorization.

388443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242.

The product of its digits is 9216, while the sum is 30.

The square root of 388443 is about 623.2519554723. The cubic root of 388443 is about 72.9640781543.

The spelling of 388443 in words is "three hundred eighty-eight thousand, four hundred forty-three".