424944209 has 2 divisors, whose sum is σ = 424944210. Its totient is φ = 424944208.

The previous prime is 424944203. The next prime is 424944229. The reversal of 424944209 is 902449424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418079809 + 6864400 = 20447^2 + 2620^2 .

It is a cyclic number.

It is not a de Polignac number, because 424944209 - 2⁴ = 424944193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424944203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212472104 + 212472105.

It is an arithmetic number, because the mean of its divisors is an integer number (212472105).

Almost surely, 2^424944209 is an apocalyptic number.

It is an amenable number.

424944209 is a deficient number, since it is larger than the sum of its proper divisors (1).

424944209 is an equidigital number, since it uses as much as digits as its factorization.

424944209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 424944209 is about 20614.1749531724. The cubic root of 424944209 is about 751.8143975941.

The spelling of 424944209 in words is "four hundred twenty-four million, nine hundred forty-four thousand, two hundred nine".