394494216 has 16 divisors (see below), whose sum is σ = 986235600. Its totient is φ = 131498064.

The previous prime is 394494203. The next prime is 394494227. The reversal of 394494216 is 612494493.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8218606 + ... + 8218653.

It is an arithmetic number, because the mean of its divisors is an integer number (61639725).

Almost surely, 2^394494216 is an apocalyptic number.

It is an amenable number.

394494216 is an abundant number, since it is smaller than the sum of its proper divisors (591741384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

394494216 is a wasteful number, since it uses less digits than its factorization.

394494216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16437268 (or 16437264 counting only the distinct ones).

The product of its digits is 186624, while the sum is 42.

The square root of 394494216 is about 19861.8784610117. The cubic root of 394494216 is about 733.4100891193.

The spelling of 394494216 in words is "three hundred ninety-four million, four hundred ninety-four thousand, two hundred sixteen".