388455 has 32 divisors (see below), whose sum is σ = 691200. Its totient is φ = 185472.

The previous prime is 388403. The next prime is 388459. The reversal of 388455 is 554883.

It is a happy number.

It is not a de Polignac number, because 388455 - 2⁶ = 388391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388459) 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 31 ways as a sum of consecutive naturals, for example, 8242 + ... + 8288.

It is an arithmetic number, because the mean of its divisors is an integer number (21600).

2³⁸⁸⁴⁵⁵ is an apocalyptic number.

388455 is a deficient number, since it is larger than the sum of its proper divisors (302745).

388455 is a wasteful number, since it uses less digits than its factorization.

388455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103.

The product of its digits is 19200, while the sum is 33.

The square root of 388455 is about 623.2615823232. The cubic root of 388455 is about 72.9648294957.

The spelling of 388455 in words is "three hundred eighty-eight thousand, four hundred fifty-five".