1204409 has 2 divisors, whose sum is σ = 1204410. Its totient is φ = 1204408.

The previous prime is 1204397. The next prime is 1204421. The reversal of 1204409 is 9044021.

It is a balanced prime because it is at equal distance from previous prime (1204397) and next prime (1204421).

It can be written as a sum of positive squares in only one way, i.e., 1149184 + 55225 = 1072^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1204409 - 2⁸ = 1204153 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (1204309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 602204 + 602205.

It is an arithmetic number, because the mean of its divisors is an integer number (602205).

2^1204409 is an apocalyptic number.

It is an amenable number.

1204409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1204409 is an equidigital number, since it uses as much as digits as its factorization.

1204409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1204409 is about 1097.4556938665. The cubic root of 1204409 is about 106.3958440064.

The spelling of 1204409 in words is "one million, two hundred four thousand, four hundred nine".