388857 has 8 divisors (see below), whose sum is σ = 592576. Its totient is φ = 222192.

The previous prime is 388837. The next prime is 388859. The reversal of 388857 is 758883.

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

It is not a de Polignac number, because 388857 - 2⁶ = 388793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388859) 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, 9238 + ... + 9279.

It is an arithmetic number, because the mean of its divisors is an integer number (74072).

2³⁸⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

388857 is a deficient number, since it is larger than the sum of its proper divisors (203719).

388857 is a wasteful number, since it uses less digits than its factorization.

388857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18527.

The product of its digits is 53760, while the sum is 39.

The square root of 388857 is about 623.5839959460. The cubic root of 388857 is about 72.9899904960.

The spelling of 388857 in words is "three hundred eighty-eight thousand, eight hundred fifty-seven".