423329999 has 2 divisors, whose sum is σ = 423330000. Its totient is φ = 423329998.

The previous prime is 423329983. The next prime is 423330001. The reversal of 423329999 is 999923324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423329999 - 2⁴ = 423329983 is a prime.

It is a Sophie Germain prime.

Together with 423330001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423329909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211664999 + 211665000.

It is an arithmetic number, because the mean of its divisors is an integer number (211665000).

Almost surely, 2^423329999 is an apocalyptic number.

423329999 is a deficient number, since it is larger than the sum of its proper divisors (1).

423329999 is an equidigital number, since it uses as much as digits as its factorization.

423329999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 50.

The square root of 423329999 is about 20574.9847873577. The cubic root of 423329999 is about 750.8612322897.

The spelling of 423329999 in words is "four hundred twenty-three million, three hundred twenty-nine thousand, nine hundred ninety-nine".