388998 has 12 divisors (see below), whose sum is σ = 842868. Its totient is φ = 129660.

The previous prime is 388991. The next prime is 389003. The reversal of 388998 is 899883.

388998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10788 + ... + 10823.

It is an arithmetic number, because the mean of its divisors is an integer number (70239).

2³⁸⁸⁹⁹⁸ is an apocalyptic number.

388998 is an abundant number, since it is smaller than the sum of its proper divisors (453870).

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

388998 is a wasteful number, since it uses less digits than its factorization.

388998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21619 (or 21616 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 388998 is about 623.6970418400. The cubic root of 388998 is about 72.9988115150.

The spelling of 388998 in words is "three hundred eighty-eight thousand, nine hundred ninety-eight".