1226942449 has 2 divisors, whose sum is σ = 1226942450. Its totient is φ = 1226942448.

The previous prime is 1226942441. The next prime is 1226942557. The reversal of 1226942449 is 9442496221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 648058849 + 578883600 = 25457^2 + 24060^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226942449 - 2³ = 1226942441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1226942441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613471224 + 613471225.

It is an arithmetic number, because the mean of its divisors is an integer number (613471225).

Almost surely, 2^1226942449 is an apocalyptic number.

It is an amenable number.

1226942449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226942449 is an equidigital number, since it uses as much as digits as its factorization.

1226942449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 43.

The square root of 1226942449 is about 35027.7382798262. The cubic root of 1226942449 is about 1070.5527318648.

The spelling of 1226942449 in words is "one billion, two hundred twenty-six million, nine hundred forty-two thousand, four hundred forty-nine".