394045216 has 24 divisors (see below), whose sum is σ = 800803584. Its totient is φ = 190666560.

The previous prime is 394045213. The next prime is 394045229. The reversal of 394045216 is 612540493.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (394045213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197620 + ... + 199603.

It is an arithmetic number, because the mean of its divisors is an integer number (33366816).

Almost surely, 2^394045216 is an apocalyptic number.

It is an amenable number.

394045216 is an abundant number, since it is smaller than the sum of its proper divisors (406758368).

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

394045216 is a wasteful number, since it uses less digits than its factorization.

394045216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397264 (or 397256 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 394045216 is about 19850.5721831891. The cubic root of 394045216 is about 733.1317359531.

The spelling of 394045216 in words is "three hundred ninety-four million, forty-five thousand, two hundred sixteen".