2840249 has 2 divisors, whose sum is σ = 2840250. Its totient is φ = 2840248.

The previous prime is 2840239. The next prime is 2840261. The reversal of 2840249 is 9420482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2839225 + 1024 = 1685^2 + 32^2 .

It is a cyclic number.

It is not a de Polignac number, because 2840249 - 2¹⁶ = 2774713 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2840209) 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, 1420124 + 1420125.

It is an arithmetic number, because the mean of its divisors is an integer number (1420125).

2^2840249 is an apocalyptic number.

It is an amenable number.

2840249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2840249 is an equidigital number, since it uses as much as digits as its factorization.

2840249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 2840249 is about 1685.3038301743. The cubic root of 2840249 is about 141.6181136190.

The spelling of 2840249 in words is "two million, eight hundred forty thousand, two hundred forty-nine".