224143729 has 2 divisors, whose sum is σ = 224143730. Its totient is φ = 224143728.

The previous prime is 224143723. The next prime is 224143747. The reversal of 224143729 is 927341422.

224143729 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., 194463025 + 29680704 = 13945^2 + 5448^2 .

It is a cyclic number.

It is not a de Polignac number, because 224143729 - 2³ = 224143721 is a prime.

It is a super-2 number, since 2×224143729² = 100480822500050882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 224143694 and 224143703.

It is not a weakly prime, because it can be changed into another prime (224143721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112071864 + 112071865.

It is an arithmetic number, because the mean of its divisors is an integer number (112071865).

Almost surely, 2^224143729 is an apocalyptic number.

It is an amenable number.

224143729 is a deficient number, since it is larger than the sum of its proper divisors (1).

224143729 is an equidigital number, since it uses as much as digits as its factorization.

224143729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 224143729 is about 14971.4304259813. The cubic root of 224143729 is about 607.4476612149.

The spelling of 224143729 in words is "two hundred twenty-four million, one hundred forty-three thousand, seven hundred twenty-nine".