1228849 has 2 divisors, whose sum is σ = 1228850. Its totient is φ = 1228848.

The previous prime is 1228841. The next prime is 1228861. The reversal of 1228849 is 9488221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 651249 + 577600 = 807^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228849 - 2³ = 1228841 is a prime.

It is not a weakly prime, because it can be changed into another prime (1228841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614424 + 614425.

It is an arithmetic number, because the mean of its divisors is an integer number (614425).

2^1228849 is an apocalyptic number.

It is an amenable number.

1228849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228849 is an equidigital number, since it uses as much as digits as its factorization.

1228849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 34.

The square root of 1228849 is about 1108.5346183137. The cubic root of 1228849 is about 107.1106957015.

The spelling of 1228849 in words is "one million, two hundred twenty-eight thousand, eight hundred forty-nine".