223429709 has 2 divisors, whose sum is σ = 223429710. Its totient is φ = 223429708.

The previous prime is 223429697. The next prime is 223429711. The reversal of 223429709 is 907924322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223412809 + 16900 = 14947^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 223429709 - 2⁴ = 223429693 is a prime.

It is a Sophie Germain prime.

Together with 223429711, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223429009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111714854 + 111714855.

It is an arithmetic number, because the mean of its divisors is an integer number (111714855).

Almost surely, 2^223429709 is an apocalyptic number.

It is an amenable number.

223429709 is a deficient number, since it is larger than the sum of its proper divisors (1).

223429709 is an equidigital number, since it uses as much as digits as its factorization.

223429709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 223429709 is about 14947.5653201449. The cubic root of 223429709 is about 606.8019577443.

The spelling of 223429709 in words is "two hundred twenty-three million, four hundred twenty-nine thousand, seven hundred nine".