224143709 has 2 divisors, whose sum is σ = 224143710. Its totient is φ = 224143708.

The previous prime is 224143687. The next prime is 224143721. The reversal of 224143709 is 907341422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219928900 + 4214809 = 14830^2 + 2053^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-224143709 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 (224143729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112071854 + 112071855.

It is an arithmetic number, because the mean of its divisors is an integer number (112071855).

Almost surely, 2^224143709 is an apocalyptic number.

It is an amenable number.

224143709 is a deficient number, since it is larger than the sum of its proper divisors (1).

224143709 is an equidigital number, since it uses as much as digits as its factorization.

224143709 is an odious number, because the sum of its binary digits is odd.

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

The square root of 224143709 is about 14971.4297580425. The cubic root of 224143709 is about 607.4476431477.

The spelling of 224143709 in words is "two hundred twenty-four million, one hundred forty-three thousand, seven hundred nine".