396456218 has 16 divisors (see below), whose sum is σ = 641549160. Its totient is φ = 183046656.

The previous prime is 396456197. The next prime is 396456227. The reversal of 396456218 is 812654693.

It can be written as a sum of positive squares in 4 ways, for example, as 367220569 + 29235649 = 19163^2 + 5407^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108203 + ... + 111806.

Almost surely, 2^396456218 is an apocalyptic number.

396456218 is a deficient number, since it is larger than the sum of its proper divisors (245092942).

396456218 is a wasteful number, since it uses less digits than its factorization.

396456218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220081.

The product of its digits is 311040, while the sum is 44.

The square root of 396456218 is about 19911.2083510770. The cubic root of 396456218 is about 734.6239413960.

The spelling of 396456218 in words is "three hundred ninety-six million, four hundred fifty-six thousand, two hundred eighteen".