424445213 has 2 divisors, whose sum is σ = 424445214. Its totient is φ = 424445212.

The previous prime is 424445209. The next prime is 424445221. The reversal of 424445213 is 312544424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424442404 + 2809 = 20602^2 + 53^2 .

It is a cyclic number.

It is not a de Polignac number, because 424445213 - 2² = 424445209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (424405213) 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, 212222606 + 212222607.

It is an arithmetic number, because the mean of its divisors is an integer number (212222607).

Almost surely, 2^424445213 is an apocalyptic number.

It is an amenable number.

424445213 is a deficient number, since it is larger than the sum of its proper divisors (1).

424445213 is an equidigital number, since it uses as much as digits as its factorization.

424445213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 29.

The square root of 424445213 is about 20602.0681728801. The cubic root of 424445213 is about 751.5200065442.

Adding to 424445213 its reverse (312544424), we get a palindrome (736989637).

The spelling of 424445213 in words is "four hundred twenty-four million, four hundred forty-five thousand, two hundred thirteen".