388434 has 16 divisors (see below), whose sum is σ = 796320. Its totient is φ = 126240.

The previous prime is 388403. The next prime is 388459. The reversal of 388434 is 434883.

It is a Curzon number.

It is an unprimeable number.

388434 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 544 + ... + 1035.

It is an arithmetic number, because the mean of its divisors is an integer number (49770).

2³⁸⁸⁴³⁴ is an apocalyptic number.

388434 is an abundant number, since it is smaller than the sum of its proper divisors (407886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388434 is a wasteful number, since it uses less digits than its factorization.

388434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625.

The product of its digits is 9216, while the sum is 30.

The square root of 388434 is about 623.2447352365. The cubic root of 388434 is about 72.9635146381.

The spelling of 388434 in words is "three hundred eighty-eight thousand, four hundred thirty-four".