4491217 has 2 divisors, whose sum is σ = 4491218. Its totient is φ = 4491216.

The previous prime is 4491203. The next prime is 4491241. The reversal of 4491217 is 7121944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3326976 + 1164241 = 1824^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 4491217 - 2⁷ = 4491089 is a prime.

It is not a weakly prime, because it can be changed into another prime (4497217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245608 + 2245609.

It is an arithmetic number, because the mean of its divisors is an integer number (2245609).

Almost surely, 2^4491217 is an apocalyptic number.

It is an amenable number.

4491217 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491217 is an equidigital number, since it uses as much as digits as its factorization.

4491217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 28.

The square root of 4491217 is about 2119.2491594902. The cubic root of 4491217 is about 164.9888820179.

The spelling of 4491217 in words is "four million, four hundred ninety-one thousand, two hundred seventeen".