388558 has 8 divisors (see below), whose sum is σ = 586728. Its totient is φ = 192984.

The previous prime is 388541. The next prime is 388567. The reversal of 388558 is 855883.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 216 + ... + 907.

It is an arithmetic number, because the mean of its divisors is an integer number (73341).

2³⁸⁸⁵⁵⁸ is an apocalyptic number.

388558 is a deficient number, since it is larger than the sum of its proper divisors (198170).

388558 is a wasteful number, since it uses less digits than its factorization.

388558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1298.

The product of its digits is 38400, while the sum is 37.

The square root of 388558 is about 623.3442066788. The cubic root of 388558 is about 72.9712778731.

Subtracting from 388558 its sum of digits (37), we obtain a triangular number (388521 = T₈₈₁).

It can be divided in two parts, 388 and 558, that added together give a triangular number (946 = T₄₃).

The spelling of 388558 in words is "three hundred eighty-eight thousand, five hundred fifty-eight".