1226404449 has 16 divisors (see below), whose sum is σ = 1817840640. Its totient is φ = 817177680.

The previous prime is 1226404447. The next prime is 1226404469. The reversal of 1226404449 is 9444046221.

It is a happy number.

1226404449 is a `hidden beast` number, since 1 + 2 + 2 + 640 + 4 + 4 + 4 + 9 = 666.

It is not a de Polignac number, because 1226404449 - 2¹ = 1226404447 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1226404447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46239 + ... + 67755.

It is an arithmetic number, because the mean of its divisors is an integer number (113615040).

Almost surely, 2^1226404449 is an apocalyptic number.

It is an amenable number.

1226404449 is a deficient number, since it is larger than the sum of its proper divisors (591436191).

1226404449 is a wasteful number, since it uses less digits than its factorization.

1226404449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23637 (or 23631 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 1226404449 is about 35020.0578097752. The cubic root of 1226404449 is about 1070.3962340127.

The spelling of 1226404449 in words is "one billion, two hundred twenty-six million, four hundred four thousand, four hundred forty-nine".