4224809 has 2 divisors, whose sum is σ = 4224810. Its totient is φ = 4224808.

The previous prime is 4224791. The next prime is 4224811. The reversal of 4224809 is 9084224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4214809 + 10000 = 2053^2 + 100^2 .

It is a cyclic number.

It is not a de Polignac number, because 4224809 - 2¹⁶ = 4159273 is a prime.

It is a super-2 number, since 2×4224809² = 35698022172962, which contains 22 as substring.

Together with 4224811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4224839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2112404 + 2112405.

It is an arithmetic number, because the mean of its divisors is an integer number (2112405).

Almost surely, 2^4224809 is an apocalyptic number.

It is an amenable number.

4224809 is a deficient number, since it is larger than the sum of its proper divisors (1).

4224809 is an equidigital number, since it uses as much as digits as its factorization.

4224809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 4224809 is about 2055.4340174279. The cubic root of 4224809 is about 161.6599201256.

The spelling of 4224809 in words is "four million, two hundred twenty-four thousand, eight hundred nine".