2219986949 has 2 divisors, whose sum is σ = 2219986950. Its totient is φ = 2219986948.

The previous prime is 2219986921. The next prime is 2219986957. The reversal of 2219986949 is 9496899122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2096998849 + 122988100 = 45793^2 + 11090^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219986949 - 2¹⁶ = 2219921413 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2219986649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109993474 + 1109993475.

It is an arithmetic number, because the mean of its divisors is an integer number (1109993475).

Almost surely, 2^2219986949 is an apocalyptic number.

It is an amenable number.

2219986949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219986949 is an equidigital number, since it uses as much as digits as its factorization.

2219986949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 59.

The square root of 2219986949 is about 47116.7374613311. The cubic root of 2219986949 is about 1304.5181936640.

The spelling of 2219986949 in words is "two billion, two hundred nineteen million, nine hundred eighty-six thousand, nine hundred forty-nine".