2026309 has 2 divisors, whose sum is σ = 2026310. Its totient is φ = 2026308.

The previous prime is 2026303. The next prime is 2026327. The reversal of 2026309 is 9036202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2022084 + 4225 = 1422^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026309 - 2⁷ = 2026181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2026309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2026303) 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, 1013154 + 1013155.

It is an arithmetic number, because the mean of its divisors is an integer number (1013155).

2^2026309 is an apocalyptic number.

It is an amenable number.

2026309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026309 is an equidigital number, since it uses as much as digits as its factorization.

2026309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 2026309 is about 1423.4848084894. The cubic root of 2026309 is about 126.5421545002.

The spelling of 2026309 in words is "two million, twenty-six thousand, three hundred nine".