388994 has 12 divisors (see below), whose sum is σ = 620754. Its totient is φ = 182784.

The previous prime is 388991. The next prime is 389003. The reversal of 388994 is 499883.

It can be written as a sum of positive squares in 3 ways, for example, as 375769 + 13225 = 613^2 + 115^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388991) 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 5 ways as a sum of consecutive naturals, for example, 242 + ... + 914.

2³⁸⁸⁹⁹⁴ is an apocalyptic number.

388994 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

388994 is a deficient number, since it is larger than the sum of its proper divisors (231760).

388994 is a wasteful number, since it uses less digits than its factorization.

388994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709 (or 692 counting only the distinct ones).

The product of its digits is 62208, while the sum is 41.

The square root of 388994 is about 623.6938351467. The cubic root of 388994 is about 72.9985613027.

Subtracting 388994 from its reverse (499883), we obtain a square (110889 = 333²).

The spelling of 388994 in words is "three hundred eighty-eight thousand, nine hundred ninety-four".