388399 has 16 divisors (see below), whose sum is σ = 470016. Its totient is φ = 316800.

The previous prime is 388391. The next prime is 388403. The reversal of 388399 is 993883.

It is not a de Polignac number, because 388399 - 2³ = 388391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388391) 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, 5764 + ... + 5830.

It is an arithmetic number, because the mean of its divisors is an integer number (29376).

2³⁸⁸³⁹⁹ is an apocalyptic number.

388399 is a deficient number, since it is larger than the sum of its proper divisors (81617).

388399 is a wasteful number, since it uses less digits than its factorization.

388399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126.

The product of its digits is 46656, while the sum is 40.

The square root of 388399 is about 623.2166557466. The cubic root of 388399 is about 72.9613231035.

It can be divided in two parts, 388 and 399, that added together give a palindrome (787).

The spelling of 388399 in words is "three hundred eighty-eight thousand, three hundred ninety-nine".