2740249 has 2 divisors, whose sum is σ = 2740250. Its totient is φ = 2740248.

The previous prime is 2740223. The next prime is 2740267. The reversal of 2740249 is 9420472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2155024 + 585225 = 1468^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 2740249 - 2⁵ = 2740217 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (2740219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370124 + 1370125.

It is an arithmetic number, because the mean of its divisors is an integer number (1370125).

2^2740249 is an apocalyptic number.

It is an amenable number.

2740249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740249 is an equidigital number, since it uses as much as digits as its factorization.

2740249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 2740249 is about 1655.3697472166. The cubic root of 2740249 is about 139.9361783931.

The spelling of 2740249 in words is "two million, seven hundred forty thousand, two hundred forty-nine".