398330 has 16 divisors (see below), whose sum is σ = 729864. Its totient is φ = 156480.

The previous prime is 398323. The next prime is 398339. The reversal of 398330 is 33893.

It can be written as a sum of positive squares in 4 ways, for example, as 151321 + 247009 = 389^2 + 497^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 398330.

It is not an unprimeable number, because it can be changed into a prime (398339) 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 7 ways as a sum of consecutive naturals, for example, 284 + ... + 936.

2³⁹⁸³³⁰ is an apocalyptic number.

398330 is a deficient number, since it is larger than the sum of its proper divisors (331534).

398330 is a wasteful number, since it uses less digits than its factorization.

398330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 721.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 398330 is about 631.1339002145. The cubic root of 398330 is about 73.5779480643.

The spelling of 398330 in words is "three hundred ninety-eight thousand, three hundred thirty".