388385 has 8 divisors (see below), whose sum is σ = 469800. Its totient is φ = 308224.

The previous prime is 388373. The next prime is 388391. The reversal of 388385 is 583883.

It can be written as a sum of positive squares in 4 ways, for example, as 130321 + 258064 = 361^2 + 508^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 388385 - 2⁴ = 388369 is a prime.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641 + ... + 1089.

It is an arithmetic number, because the mean of its divisors is an integer number (58725).

2³⁸⁸³⁸⁵ is an apocalyptic number.

It is an amenable number.

388385 is a deficient number, since it is larger than the sum of its proper divisors (81415).

388385 is a wasteful number, since it uses less digits than its factorization.

388385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627.

The product of its digits is 23040, while the sum is 35.

The square root of 388385 is about 623.2054235964. The cubic root of 388385 is about 72.9604464527.

It can be divided in two parts, 3 and 88385, that added together give a palindrome (88388).

The spelling of 388385 in words is "three hundred eighty-eight thousand, three hundred eighty-five".