398318 has 8 divisors (see below), whose sum is σ = 605280. Its totient is φ = 196560.

The previous prime is 398311. The next prime is 398323. The reversal of 398318 is 813893.

398318 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398311) 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 3 ways as a sum of consecutive naturals, for example, 1103 + ... + 1418.

It is an arithmetic number, because the mean of its divisors is an integer number (75660).

2³⁹⁸³¹⁸ is an apocalyptic number.

398318 is a deficient number, since it is larger than the sum of its proper divisors (206962).

398318 is a wasteful number, since it uses less digits than its factorization.

398318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602.

The product of its digits is 5184, while the sum is 32.

The square root of 398318 is about 631.1243934440. The cubic root of 398318 is about 73.5772091926.

The spelling of 398318 in words is "three hundred ninety-eight thousand, three hundred eighteen".