2219849 has 2 divisors, whose sum is σ = 2219850. Its totient is φ = 2219848.

The previous prime is 2219839. The next prime is 2219869. The reversal of 2219849 is 9489122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1364224 + 855625 = 1168^2 + 925^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2219849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2219839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109924 + 1109925.

It is an arithmetic number, because the mean of its divisors is an integer number (1109925).

2^2219849 is an apocalyptic number.

It is an amenable number.

2219849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219849 is an equidigital number, since it uses as much as digits as its factorization.

2219849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 2219849 is about 1489.9157694313. The cubic root of 2219849 is about 130.4491172378.

The spelling of 2219849 in words is "two million, two hundred nineteen thousand, eight hundred forty-nine".