4393217 has 2 divisors, whose sum is σ = 4393218. Its totient is φ = 4393216.

The previous prime is 4393201. The next prime is 4393219. The reversal of 4393217 is 7123934.

It is a Cunningham number, because it is equal to 2096²+1.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4393216 + 1 = 2096^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 4393217 - 2⁴ = 4393201 is a prime.

Together with 4393219, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4393217.

It is not a weakly prime, because it can be changed into another prime (4393219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2196608 + 2196609.

It is an arithmetic number, because the mean of its divisors is an integer number (2196609).

Almost surely, 2^4393217 is an apocalyptic number.

It is an amenable number.

4393217 is a deficient number, since it is larger than the sum of its proper divisors (1).

4393217 is an equidigital number, since it uses as much as digits as its factorization.

4393217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

The square root of 4393217 is about 2096.0002385496. Note that the first 3 decimals coincide. The cubic root of 4393217 is about 163.7800069322.

The spelling of 4393217 in words is "four million, three hundred ninety-three thousand, two hundred seventeen".