1222944893 has 2 divisors, whose sum is σ = 1222944894. Its totient is φ = 1222944892.

The previous prime is 1222944871. The next prime is 1222944901. The reversal of 1222944893 is 3984492221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 947285284 + 275659609 = 30778^2 + 16603^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222944893 - 2³⁰ = 149203069 is a prime.

It is a super-2 number, since 2×1222944893² = 2991188422629562898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222914893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611472446 + 611472447.

It is an arithmetic number, because the mean of its divisors is an integer number (611472447).

Almost surely, 2^1222944893 is an apocalyptic number.

It is an amenable number.

1222944893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222944893 is an equidigital number, since it uses as much as digits as its factorization.

1222944893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 44.

The square root of 1222944893 is about 34970.6290049235. The cubic root of 1222944893 is about 1069.3887949642.

The spelling of 1222944893 in words is "one billion, two hundred twenty-two million, nine hundred forty-four thousand, eight hundred ninety-three".