224464421 has 2 divisors, whose sum is σ = 224464422. Its totient is φ = 224464420.

The previous prime is 224464417. The next prime is 224464489. The reversal of 224464421 is 124464422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 151019521 + 73444900 = 12289^2 + 8570^2 .

It is a cyclic number.

It is not a de Polignac number, because 224464421 - 2² = 224464417 is a prime.

It is a Chen prime.

It is equal to p_12355058 and since 224464421 and 12355058 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224464411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112232210 + 112232211.

It is an arithmetic number, because the mean of its divisors is an integer number (112232211).

Almost surely, 2^224464421 is an apocalyptic number.

It is an amenable number.

224464421 is a deficient number, since it is larger than the sum of its proper divisors (1).

224464421 is an equidigital number, since it uses as much as digits as its factorization.

224464421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 29.

The square root of 224464421 is about 14982.1367301196. The cubic root of 224464421 is about 607.7372235943.

Subtracting from 224464421 its reverse (124464422), we obtain a palindrome (99999999).

The spelling of 224464421 in words is "two hundred twenty-four million, four hundred sixty-four thousand, four hundred twenty-one".