2842309 has 2 divisors, whose sum is σ = 2842310. Its totient is φ = 2842308.

The previous prime is 2842291. The next prime is 2842331. The reversal of 2842309 is 9032482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1512900 + 1329409 = 1230^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 2842309 - 2⁷ = 2842181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2845309) 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, 1421154 + 1421155.

It is an arithmetic number, because the mean of its divisors is an integer number (1421155).

2^2842309 is an apocalyptic number.

It is an amenable number.

2842309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2842309 is an equidigital number, since it uses as much as digits as its factorization.

2842309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2842309 is about 1685.9148851588. The cubic root of 2842309 is about 141.6523433423.

The spelling of 2842309 in words is "two million, eight hundred forty-two thousand, three hundred nine".