1228841 has 2 divisors, whose sum is σ = 1228842. Its totient is φ = 1228840.

The previous prime is 1228837. The next prime is 1228849. The reversal of 1228841 is 1488221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 958441 + 270400 = 979^2 + 520^2 .

It is a cyclic number.

It is not a de Polignac number, because 1228841 - 2² = 1228837 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1228841.

It is not a weakly prime, because it can be changed into another prime (1228849) 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, 614420 + 614421.

It is an arithmetic number, because the mean of its divisors is an integer number (614421).

2^1228841 is an apocalyptic number.

It is an amenable number.

1228841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228841 is an equidigital number, since it uses as much as digits as its factorization.

1228841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1024, while the sum is 26.

The square root of 1228841 is about 1108.5310099406. The cubic root of 1228841 is about 107.1104632651.

The spelling of 1228841 in words is "one million, two hundred twenty-eight thousand, eight hundred forty-one".