394614217 has 8 divisors (see below), whose sum is σ = 428018472. Its totient is φ = 362342400.

The previous prime is 394614191. The next prime is 394614229. The reversal of 394614217 is 712416493.

It can be written as a sum of positive squares in 4 ways, for example, as 17438976 + 377175241 = 4176^2 + 19421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 394614217 - 2⁷ = 394614089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394614247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282384 + ... + 283777.

It is an arithmetic number, because the mean of its divisors is an integer number (53502309).

Almost surely, 2^394614217 is an apocalyptic number.

It is an amenable number.

394614217 is a deficient number, since it is larger than the sum of its proper divisors (33404255).

394614217 is a wasteful number, since it uses less digits than its factorization.

394614217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566219.

The product of its digits is 36288, while the sum is 37.

The square root of 394614217 is about 19864.8991187975. The cubic root of 394614217 is about 733.4844467973.

The spelling of 394614217 in words is "three hundred ninety-four million, six hundred fourteen thousand, two hundred seventeen".