394484218 has 16 divisors (see below), whose sum is σ = 628565184. Its totient is φ = 185037760.

The previous prime is 394484197. The next prime is 394484219. The reversal of 394484218 is 812484493.

It is not an unprimeable number, because it can be changed into a prime (394484219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8080 + ... + 29227.

It is an arithmetic number, because the mean of its divisors is an integer number (39285324).

Almost surely, 2^394484218 is an apocalyptic number.

394484218 is a deficient number, since it is larger than the sum of its proper divisors (234080966).

394484218 is a wasteful number, since it uses less digits than its factorization.

394484218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37637.

The product of its digits is 221184, while the sum is 43.

The square root of 394484218 is about 19861.6267712391. The cubic root of 394484218 is about 733.4038932566.

The spelling of 394484218 in words is "three hundred ninety-four million, four hundred eighty-four thousand, two hundred eighteen".