394216 has 8 divisors (see below), whose sum is σ = 739170. Its totient is φ = 197104.

The previous prime is 394211. The next prime is 394223. The reversal of 394216 is 612493.

It can be written as a sum of positive squares in only one way, i.e., 298116 + 96100 = 546^2 + 310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (394211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24631 + ... + 24646.

2³⁹⁴²¹⁶ is an apocalyptic number.

It is an amenable number.

394216 is a deficient number, since it is larger than the sum of its proper divisors (344954).

394216 is a wasteful number, since it uses less digits than its factorization.

394216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49283 (or 49279 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 394216 is about 627.8662277906. The cubic root of 394216 is about 73.3237636732.

The spelling of 394216 in words is "three hundred ninety-four thousand, two hundred sixteen".