2194417 has 2 divisors, whose sum is σ = 2194418. Its totient is φ = 2194416.

The previous prime is 2194403. The next prime is 2194421. The reversal of 2194417 is 7144912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1461681 + 732736 = 1209^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194417 - 2¹⁹ = 1670129 is a prime.

It is not a weakly prime, because it can be changed into another prime (2194447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097208 + 1097209.

It is an arithmetic number, because the mean of its divisors is an integer number (1097209).

2^2194417 is an apocalyptic number.

It is an amenable number.

2194417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194417 is an equidigital number, since it uses as much as digits as its factorization.

2194417 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2194417 is about 1481.3564729666. The cubic root of 2194417 is about 129.9490332755.

The spelling of 2194417 in words is "two million, one hundred ninety-four thousand, four hundred seventeen".