224434421 has 2 divisors, whose sum is σ = 224434422. Its totient is φ = 224434420.

The previous prime is 224434409. The next prime is 224434439. The reversal of 224434421 is 124434422.

It is a happy number.

224434421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 215943025 + 8491396 = 14695^2 + 2914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224434421 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224434481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112217210 + 112217211.

It is an arithmetic number, because the mean of its divisors is an integer number (112217211).

Almost surely, 2^224434421 is an apocalyptic number.

It is an amenable number.

224434421 is a deficient number, since it is larger than the sum of its proper divisors (1).

224434421 is an equidigital number, since it uses as much as digits as its factorization.

224434421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 26.

The square root of 224434421 is about 14981.1355043601. The cubic root of 224434421 is about 607.7101473968.

Adding to 224434421 its reverse (124434422), we get a palindrome (348868843).

Subtracting from 224434421 its reverse (124434422), we obtain a palindrome (99999999).

The spelling of 224434421 in words is "two hundred twenty-four million, four hundred thirty-four thousand, four hundred twenty-one".