2219641 has 2 divisors, whose sum is σ = 2219642. Its totient is φ = 2219640.

The previous prime is 2219629. The next prime is 2219647. The reversal of 2219641 is 1469122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2190400 + 29241 = 1480^2 + 171^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219641 - 2⁷ = 2219513 is a prime.

It is not a weakly prime, because it can be changed into another prime (2219647) 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, 1109820 + 1109821.

It is an arithmetic number, because the mean of its divisors is an integer number (1109821).

2^2219641 is an apocalyptic number.

It is an amenable number.

2219641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219641 is an equidigital number, since it uses as much as digits as its factorization.

2219641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 25.

The square root of 2219641 is about 1489.8459651924. The cubic root of 2219641 is about 130.4450427469.

The spelling of 2219641 in words is "two million, two hundred nineteen thousand, six hundred forty-one".