396218 has 4 divisors (see below), whose sum is σ = 594330. Its totient is φ = 198108.

The previous prime is 396217. The next prime is 396239. The reversal of 396218 is 812693.

396218 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812693 = 7 ⋅116099.

It can be written as a sum of positive squares in only one way, i.e., 375769 + 20449 = 613^2 + 143^2 .

It is not an unprimeable number, because it can be changed into a prime (396217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99053 + ... + 99056.

2³⁹⁶²¹⁸ is an apocalyptic number.

396218 is a deficient number, since it is larger than the sum of its proper divisors (198112).

396218 is a wasteful number, since it uses less digits than its factorization.

396218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198111.

The product of its digits is 2592, while the sum is 29.

The square root of 396218 is about 629.4584974405. The cubic root of 396218 is about 73.4476774487.

The spelling of 396218 in words is "three hundred ninety-six thousand, two hundred eighteen".