2726209 has 2 divisors, whose sum is σ = 2726210. Its totient is φ = 2726208.

The previous prime is 2726201. The next prime is 2726221. The reversal of 2726209 is 9026272.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2471184 + 255025 = 1572^2 + 505^2 .

It is a cyclic number.

It is not a de Polignac number, because 2726209 - 2³ = 2726201 is a prime.

It is not a weakly prime, because it can be changed into another prime (2726201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1363104 + 1363105.

It is an arithmetic number, because the mean of its divisors is an integer number (1363105).

2^2726209 is an apocalyptic number.

It is an amenable number.

2726209 is a deficient number, since it is larger than the sum of its proper divisors (1).

2726209 is an equidigital number, since it uses as much as digits as its factorization.

2726209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 2726209 is about 1651.1235568545. The cubic root of 2726209 is about 139.6967756971.

The spelling of 2726209 in words is "two million, seven hundred twenty-six thousand, two hundred nine".