388239 has 8 divisors (see below), whose sum is σ = 522240. Its totient is φ = 256536.

The previous prime is 388237. The next prime is 388253. The reversal of 388239 is 932883.

388239 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 388239 - 2¹ = 388237 is a prime.

It is a super-2 number, since 2×388239² = 301459042242, which contains 22 as substring.

388239 is strictly pandigital in base 7.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388231) 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, 129 + ... + 890.

It is an arithmetic number, because the mean of its divisors is an integer number (65280).

2³⁸⁸²³⁹ is an apocalyptic number.

388239 is a deficient number, since it is larger than the sum of its proper divisors (134001).

388239 is a wasteful number, since it uses less digits than its factorization.

388239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its digits is 10368, while the sum is 33.

The square root of 388239 is about 623.0882762498. The cubic root of 388239 is about 72.9513029824.

Subtracting 388239 from its reverse (932883), we obtain a square (544644 = 738²).

The spelling of 388239 in words is "three hundred eighty-eight thousand, two hundred thirty-nine".