1424809 has 2 divisors, whose sum is σ = 1424810. Its totient is φ = 1424808.

The previous prime is 1424803. The next prime is 1424831. The reversal of 1424809 is 9084241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1149184 + 275625 = 1072^2 + 525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1424809 - 2⁷ = 1424681 is a prime.

It is a Chen prime.

It is equal to p₁₀₈₈₂₉ and since 1424809 and 108829 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (1424803) 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 as a sum of consecutive naturals, namely, 712404 + 712405.

It is an arithmetic number, because the mean of its divisors is an integer number (712405).

2^1424809 is an apocalyptic number.

It is an amenable number.

1424809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1424809 is an equidigital number, since it uses as much as digits as its factorization.

1424809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1424809 is about 1193.6536348539. The cubic root of 1424809 is about 112.5258278148.

The spelling of 1424809 in words is "one million, four hundred twenty-four thousand, eight hundred nine".