394417 has 4 divisors (see below), whose sum is σ = 417636. Its totient is φ = 371200.

The previous prime is 394411. The next prime is 394453. The reversal of 394417 is 714493.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 341056 + 53361 = 584^2 + 231^2 .

It is a cyclic number.

It is not a de Polignac number, because 394417 - 2³ = 394409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11584 + ... + 11617.

It is an arithmetic number, because the mean of its divisors is an integer number (104409).

2³⁹⁴⁴¹⁷ is an apocalyptic number.

It is an amenable number.

394417 is a deficient number, since it is larger than the sum of its proper divisors (23219).

394417 is a wasteful number, since it uses less digits than its factorization.

394417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23218.

The product of its digits is 3024, while the sum is 28.

The square root of 394417 is about 628.0262733358. The cubic root of 394417 is about 73.3362234857.

The spelling of 394417 in words is "three hundred ninety-four thousand, four hundred seventeen".