223304729 has 2 divisors, whose sum is σ = 223304730. Its totient is φ = 223304728.

The previous prime is 223304717. The next prime is 223304743. The reversal of 223304729 is 927403322.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167832025 + 55472704 = 12955^2 + 7448^2 .

It is a cyclic number.

It is not a de Polignac number, because 223304729 - 2¹² = 223300633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223304695 and 223304704.

It is not a weakly prime, because it can be changed into another prime (223304759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111652364 + 111652365.

It is an arithmetic number, because the mean of its divisors is an integer number (111652365).

Almost surely, 2^223304729 is an apocalyptic number.

It is an amenable number.

223304729 is a deficient number, since it is larger than the sum of its proper divisors (1).

223304729 is an equidigital number, since it uses as much as digits as its factorization.

223304729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 223304729 is about 14943.3841214097. The cubic root of 223304729 is about 606.6887942593.

The spelling of 223304729 in words is "two hundred twenty-three million, three hundred four thousand, seven hundred twenty-nine".