447234509 has 2 divisors, whose sum is σ = 447234510. Its totient is φ = 447234508.

The previous prime is 447234499. The next prime is 447234533. The reversal of 447234509 is 905432744.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338449609 + 108784900 = 18397^2 + 10430^2 .

It is a cyclic number.

It is not a de Polignac number, because 447234509 - 2⁸ = 447234253 is a prime.

It is a Sophie Germain prime.

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 (447234539) 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 as a sum of consecutive naturals, namely, 223617254 + 223617255.

It is an arithmetic number, because the mean of its divisors is an integer number (223617255).

Almost surely, 2^447234509 is an apocalyptic number.

It is an amenable number.

447234509 is a deficient number, since it is larger than the sum of its proper divisors (1).

447234509 is an equidigital number, since it uses as much as digits as its factorization.

447234509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 38.

The square root of 447234509 is about 21147.9197322101. The cubic root of 447234509 is about 764.7364116733.

The spelling of 447234509 in words is "four hundred forty-seven million, two hundred thirty-four thousand, five hundred nine".