2909243 has 2 divisors, whose sum is σ = 2909244. Its totient is φ = 2909242.

The previous prime is 2909239. The next prime is 2909267. The reversal of 2909243 is 3429092.

2909243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2909243 - 2² = 2909239 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2929243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1454621 + 1454622.

It is an arithmetic number, because the mean of its divisors is an integer number (1454622).

2^2909243 is an apocalyptic number.

2909243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2909243 is an equidigital number, since it uses as much as digits as its factorization.

2909243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 2909243 is about 1705.6503158620. The cubic root of 2909243 is about 142.7556588288.

The spelling of 2909243 in words is "two million, nine hundred nine thousand, two hundred forty-three".