388591 has 8 divisors (see below), whose sum is σ = 454784. Its totient is φ = 325080.

The previous prime is 388573. The next prime is 388621. The reversal of 388591 is 195883.

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

It is not a de Polignac number, because 388591 - 2¹¹ = 386543 is a prime.

It is a Duffinian number.

388591 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388541) 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, 345 + ... + 946.

It is an arithmetic number, because the mean of its divisors is an integer number (56848).

2³⁸⁸⁵⁹¹ is an apocalyptic number.

388591 is a deficient number, since it is larger than the sum of its proper divisors (66193).

388591 is a wasteful number, since it uses less digits than its factorization.

388591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341.

The product of its digits is 8640, while the sum is 34.

The square root of 388591 is about 623.3706762433. The cubic root of 388591 is about 72.9733436170.

It can be divided in two parts, 388 and 591, that added together give a palindrome (979).

The spelling of 388591 in words is "three hundred eighty-eight thousand, five hundred ninety-one".