424274209 has 2 divisors, whose sum is σ = 424274210. Its totient is φ = 424274208.

The previous prime is 424274189. The next prime is 424274233. The reversal of 424274209 is 902472424.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272910400 + 151363809 = 16520^2 + 12303^2 .

It is a cyclic number.

It is not a de Polignac number, because 424274209 - 2⁹ = 424273697 is a prime.

It is not a weakly prime, because it can be changed into another prime (424274269) 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, 212137104 + 212137105.

It is an arithmetic number, because the mean of its divisors is an integer number (212137105).

Almost surely, 2^424274209 is an apocalyptic number.

It is an amenable number.

424274209 is a deficient number, since it is larger than the sum of its proper divisors (1).

424274209 is an equidigital number, since it uses as much as digits as its factorization.

424274209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 424274209 is about 20597.9175889215. The cubic root of 424274209 is about 751.4190667873.

The spelling of 424274209 in words is "four hundred twenty-four million, two hundred seventy-four thousand, two hundred nine".