388930 has 32 divisors (see below), whose sum is σ = 777600. Its totient is φ = 139392.

The previous prime is 388903. The next prime is 388931. The reversal of 388930 is 39883.

It is a junction number, because it is equal to n+sod(n) for n = 388892 and 388901.

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 15 ways as a sum of consecutive naturals, for example, 4326 + ... + 4414.

It is an arithmetic number, because the mean of its divisors is an integer number (24300).

2³⁸⁸⁹³⁰ is an apocalyptic number.

388930 is a deficient number, since it is larger than the sum of its proper divisors (388670).

388930 is a wasteful number, since it uses less digits than its factorization.

388930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 388930 is about 623.6425258111. The cubic root of 388930 is about 72.9945576727.

The spelling of 388930 in words is "three hundred eighty-eight thousand, nine hundred thirty".