423353009 has 2 divisors, whose sum is σ = 423353010. Its totient is φ = 423353008.

The previous prime is 423352999. The next prime is 423353011. The reversal of 423353009 is 900353324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311416609 + 111936400 = 17647^2 + 10580^2 .

It is a cyclic number.

It is not a de Polignac number, because 423353009 - 2⁸ = 423352753 is a prime.

It is a super-3 number, since 3×423353009³ (a number of 27 digits) contains 333 as substring.

Together with 423353011, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (423353039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211676504 + 211676505.

It is an arithmetic number, because the mean of its divisors is an integer number (211676505).

Almost surely, 2^423353009 is an apocalyptic number.

It is an amenable number.

423353009 is a deficient number, since it is larger than the sum of its proper divisors (1).

423353009 is an equidigital number, since it uses as much as digits as its factorization.

423353009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 423353009 is about 20575.5439539274. The cubic root of 423353009 is about 750.8748363369.

The spelling of 423353009 in words is "four hundred twenty-three million, three hundred fifty-three thousand, nine".