271428709 has 2 divisors, whose sum is σ = 271428710. Its totient is φ = 271428708.

The previous prime is 271428701. The next prime is 271428757. The reversal of 271428709 is 907824172.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144528484 + 126900225 = 12022^2 + 11265^2 .

It is a cyclic number.

It is not a de Polignac number, because 271428709 - 2³ = 271428701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (271428701) 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, 135714354 + 135714355.

It is an arithmetic number, because the mean of its divisors is an integer number (135714355).

Almost surely, 2^271428709 is an apocalyptic number.

It is an amenable number.

271428709 is a deficient number, since it is larger than the sum of its proper divisors (1).

271428709 is an equidigital number, since it uses as much as digits as its factorization.

271428709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 271428709 is about 16475.0935960923. The cubic root of 271428709 is about 647.4684243931.

The spelling of 271428709 in words is "two hundred seventy-one million, four hundred twenty-eight thousand, seven hundred nine".