224223917 has 2 divisors, whose sum is σ = 224223918. Its totient is φ = 224223916.

The previous prime is 224223913. The next prime is 224223943. The reversal of 224223917 is 719322422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191379556 + 32844361 = 13834^2 + 5731^2 .

It is a cyclic number.

It is not a de Polignac number, because 224223917 - 2² = 224223913 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 (224223913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112111958 + 112111959.

It is an arithmetic number, because the mean of its divisors is an integer number (112111959).

Almost surely, 2^224223917 is an apocalyptic number.

It is an amenable number.

224223917 is a deficient number, since it is larger than the sum of its proper divisors (1).

224223917 is an equidigital number, since it uses as much as digits as its factorization.

224223917 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 224223917 is about 14974.1082205252. The cubic root of 224223917 is about 607.5200912366.

The spelling of 224223917 in words is "two hundred twenty-four million, two hundred twenty-three thousand, nine hundred seventeen".