424909 has 2 divisors, whose sum is σ = 424910. Its totient is φ = 424908.

The previous prime is 424903. The next prime is 424913. The reversal of 424909 is 909424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386884 + 38025 = 622^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 424909 - 2⁹ = 424397 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424903) 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, 212454 + 212455.

It is an arithmetic number, because the mean of its divisors is an integer number (212455).

2⁴²⁴⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

424909 is a deficient number, since it is larger than the sum of its proper divisors (1).

424909 is an equidigital number, since it uses as much as digits as its factorization.

424909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 424909 is about 651.8504429699. The cubic root of 424909 is about 75.1793633014.

The spelling of 424909 in words is "four hundred twenty-four thousand, nine hundred nine".