224437729 has 4 divisors (see below), whose sum is σ = 225272340. Its totient is φ = 223603120.

The previous prime is 224437691. The next prime is 224437771. The reversal of 224437729 is 927734422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121881600 + 102556129 = 11040^2 + 10127^2 .

It is a cyclic number.

It is not a de Polignac number, because 224437729 - 2⁹ = 224437217 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 224437691 and 224437700.

It is not an unprimeable number, because it can be changed into a prime (224437789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416902 + ... + 417439.

It is an arithmetic number, because the mean of its divisors is an integer number (56318085).

Almost surely, 2^224437729 is an apocalyptic number.

It is an amenable number.

224437729 is a deficient number, since it is larger than the sum of its proper divisors (834611).

224437729 is an equidigital number, since it uses as much as digits as its factorization.

224437729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834610.

The product of its digits is 169344, while the sum is 40.

The square root of 224437729 is about 14981.2459094696. The cubic root of 224437729 is about 607.7131331172.

The spelling of 224437729 in words is "two hundred twenty-four million, four hundred thirty-seven thousand, seven hundred twenty-nine".