224231789 has 2 divisors, whose sum is σ = 224231790. Its totient is φ = 224231788.

The previous prime is 224231779. The next prime is 224231797. The reversal of 224231789 is 987132422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221027689 + 3204100 = 14867^2 + 1790^2 .

It is a cyclic number.

It is not a de Polignac number, because 224231789 - 2¹² = 224227693 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224231779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112115894 + 112115895.

It is an arithmetic number, because the mean of its divisors is an integer number (112115895).

Almost surely, 2^224231789 is an apocalyptic number.

It is an amenable number.

224231789 is a deficient number, since it is larger than the sum of its proper divisors (1).

224231789 is an equidigital number, since it uses as much as digits as its factorization.

224231789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 224231789 is about 14974.3710719349. The cubic root of 224231789 is about 607.5272007104.

The spelling of 224231789 in words is "two hundred twenty-four million, two hundred thirty-one thousand, seven hundred eighty-nine".