454727309 has 2 divisors, whose sum is σ = 454727310. Its totient is φ = 454727308.

The previous prime is 454727281. The next prime is 454727311. The reversal of 454727309 is 903727454.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 452753284 + 1974025 = 21278^2 + 1405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-454727309 is a prime.

It is a Sophie Germain prime.

Together with 454727311, 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 (454727359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227363654 + 227363655.

It is an arithmetic number, because the mean of its divisors is an integer number (227363655).

Almost surely, 2^454727309 is an apocalyptic number.

It is an amenable number.

454727309 is a deficient number, since it is larger than the sum of its proper divisors (1).

454727309 is an equidigital number, since it uses as much as digits as its factorization.

454727309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 454727309 is about 21324.3360740727. The cubic root of 454727309 is about 768.9834840708.

The spelling of 454727309 in words is "four hundred fifty-four million, seven hundred twenty-seven thousand, three hundred nine".