727427009 has 2 divisors, whose sum is σ = 727427010. Its totient is φ = 727427008.

The previous prime is 727426949. The next prime is 727427011. The reversal of 727427009 is 900724727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 645922225 + 81504784 = 25415^2 + 9028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-727427009 is a prime.

Together with 727427011, 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 (727427069) 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, 363713504 + 363713505.

It is an arithmetic number, because the mean of its divisors is an integer number (363713505).

Almost surely, 2^727427009 is an apocalyptic number.

It is an amenable number.

727427009 is a deficient number, since it is larger than the sum of its proper divisors (1).

727427009 is an equidigital number, since it uses as much as digits as its factorization.

727427009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 727427009 is about 26970.8548066241. The cubic root of 727427009 is about 899.3522124586.

The spelling of 727427009 in words is "seven hundred twenty-seven million, four hundred twenty-seven thousand, nine".