224478389 has 2 divisors, whose sum is σ = 224478390. Its totient is φ = 224478388.

The previous prime is 224478383. The next prime is 224478391. The reversal of 224478389 is 983874422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197177764 + 27300625 = 14042^2 + 5225^2 .

It is a cyclic number.

It is not a de Polignac number, because 224478389 - 2²⁰ = 223429813 is a prime.

Together with 224478391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224478383) 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, 112239194 + 112239195.

It is an arithmetic number, because the mean of its divisors is an integer number (112239195).

Almost surely, 2^224478389 is an apocalyptic number.

It is an amenable number.

224478389 is a deficient number, since it is larger than the sum of its proper divisors (1).

224478389 is an equidigital number, since it uses as much as digits as its factorization.

224478389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 774144, while the sum is 47.

The square root of 224478389 is about 14982.6028780049. The cubic root of 224478389 is about 607.7498294488.

The spelling of 224478389 in words is "two hundred twenty-four million, four hundred seventy-eight thousand, three hundred eighty-nine".