398938 has 8 divisors (see below), whose sum is σ = 602388. Its totient is φ = 198144.

The previous prime is 398933. The next prime is 398941. The reversal of 398938 is 839893.

398938 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 339889 + 59049 = 583^2 + 243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 398938.

It is not an unprimeable number, because it can be changed into a prime (398933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231 + ... + 922.

2³⁹⁸⁹³⁸ is an apocalyptic number.

398938 is a deficient number, since it is larger than the sum of its proper divisors (203450).

398938 is a wasteful number, since it uses less digits than its factorization.

398938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its digits is 46656, while the sum is 40.

The square root of 398938 is about 631.6153892995. The cubic root of 398938 is about 73.6153648215.

The spelling of 398938 in words is "three hundred ninety-eight thousand, nine hundred thirty-eight".