1222984949 has 2 divisors, whose sum is σ = 1222984950. Its totient is φ = 1222984948.

The previous prime is 1222984933. The next prime is 1222984991. The reversal of 1222984949 is 9494892221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1143454225 + 79530724 = 33815^2 + 8918^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222984949 - 2⁴ = 1222984933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1222984897 and 1222984906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222984909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611492474 + 611492475.

It is an arithmetic number, because the mean of its divisors is an integer number (611492475).

Almost surely, 2^1222984949 is an apocalyptic number.

It is an amenable number.

1222984949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222984949 is an equidigital number, since it uses as much as digits as its factorization.

1222984949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 50.

The square root of 1222984949 is about 34971.2017094066. The cubic root of 1222984949 is about 1069.4004703253.

The spelling of 1222984949 in words is "one billion, two hundred twenty-two million, nine hundred eighty-four thousand, nine hundred forty-nine".