224215393 has 2 divisors, whose sum is σ = 224215394. Its totient is φ = 224215392.

The previous prime is 224215361. The next prime is 224215423. The reversal of 224215393 is 393512422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224011089 + 204304 = 14967^2 + 452^2 .

It is a cyclic number.

It is not a de Polignac number, because 224215393 - 2⁵ = 224215361 is a prime.

It is not a weakly prime, because it can be changed into another prime (224215793) 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, 112107696 + 112107697.

It is an arithmetic number, because the mean of its divisors is an integer number (112107697).

Almost surely, 2^224215393 is an apocalyptic number.

It is an amenable number.

224215393 is a deficient number, since it is larger than the sum of its proper divisors (1).

224215393 is an equidigital number, since it uses as much as digits as its factorization.

224215393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 31.

The square root of 224215393 is about 14973.8235931909. The cubic root of 224215393 is about 607.5123927315.

The spelling of 224215393 in words is "two hundred twenty-four million, two hundred fifteen thousand, three hundred ninety-three".