394026218 has 16 divisors (see below), whose sum is σ = 622770720. Its totient is φ = 186456816.

The previous prime is 394026203. The next prime is 394026223. The reversal of 394026218 is 812620493.

It is a Curzon number.

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, 37805 + ... + 47087.

It is an arithmetic number, because the mean of its divisors is an integer number (38923170).

Almost surely, 2^394026218 is an apocalyptic number.

394026218 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

394026218 is a deficient number, since it is larger than the sum of its proper divisors (228744502).

394026218 is a wasteful number, since it uses less digits than its factorization.

394026218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10421.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 394026218 is about 19850.0936521720. The cubic root of 394026218 is about 733.1199536668.

The spelling of 394026218 in words is "three hundred ninety-four million, twenty-six thousand, two hundred eighteen".