4020217 has 2 divisors, whose sum is σ = 4020218. Its totient is φ = 4020216.

The previous prime is 4020197. The next prime is 4020221. The reversal of 4020217 is 7120204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3779136 + 241081 = 1944^2 + 491^2 .

It is a cyclic number.

It is not a de Polignac number, because 4020217 - 2¹⁵ = 3987449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4020217.

It is not a weakly prime, because it can be changed into another prime (4020227) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010108 + 2010109.

It is an arithmetic number, because the mean of its divisors is an integer number (2010109).

Almost surely, 2^4020217 is an apocalyptic number.

It is an amenable number.

4020217 is a deficient number, since it is larger than the sum of its proper divisors (1).

4020217 is an equidigital number, since it uses as much as digits as its factorization.

4020217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 4020217 is about 2005.0478797276. The cubic root of 4020217 is about 159.0070932848.

The spelling of 4020217 in words is "four million, twenty thousand, two hundred seventeen".