424541809 has 2 divisors, whose sum is σ = 424541810. Its totient is φ = 424541808.

The previous prime is 424541779. The next prime is 424541863. The reversal of 424541809 is 908145424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398122209 + 26419600 = 19953^2 + 5140^2 .

It is a cyclic number.

It is not a de Polignac number, because 424541809 - 2⁹ = 424541297 is a prime.

It is not a weakly prime, because it can be changed into another prime (424541879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212270904 + 212270905.

It is an arithmetic number, because the mean of its divisors is an integer number (212270905).

Almost surely, 2^424541809 is an apocalyptic number.

It is an amenable number.

424541809 is a deficient number, since it is larger than the sum of its proper divisors (1).

424541809 is an equidigital number, since it uses as much as digits as its factorization.

424541809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 424541809 is about 20604.4123672577. The cubic root of 424541809 is about 751.5770129752.

The spelling of 424541809 in words is "four hundred twenty-four million, five hundred forty-one thousand, eight hundred nine".