388936 has 16 divisors (see below), whose sum is σ = 742140. Its totient is φ = 191040.

The previous prime is 388933. The next prime is 388937. The reversal of 388936 is 639883.

It is a happy number.

388936 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 352836 + 36100 = 594^2 + 190^2 .

It is an Ulam number.

Its product of digits (31104) is a multiple of the sum of its prime factors (864).

It is a junction number, because it is equal to n+sod(n) for n = 388895 and 388904.

It is not an unprimeable number, because it can be changed into a prime (388931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90 + ... + 886.

2³⁸⁸⁹³⁶ is an apocalyptic number.

It is an amenable number.

388936 is a deficient number, since it is larger than the sum of its proper divisors (353204).

388936 is a wasteful number, since it uses less digits than its factorization.

388936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864 (or 860 counting only the distinct ones).

The product of its digits is 31104, while the sum is 37.

The square root of 388936 is about 623.6473362406. The cubic root of 388936 is about 72.9949330317.

The spelling of 388936 in words is "three hundred eighty-eight thousand, nine hundred thirty-six".