2740489 has 2 divisors, whose sum is σ = 2740490. Its totient is φ = 2740488.

The previous prime is 2740483. The next prime is 2740511. The reversal of 2740489 is 9840472.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1669264 + 1071225 = 1292^2 + 1035^2 .

It is a cyclic number.

It is not a de Polignac number, because 2740489 - 2⁹ = 2739977 is a prime.

It is not a weakly prime, because it can be changed into another prime (2740483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1370244 + 1370245.

It is an arithmetic number, because the mean of its divisors is an integer number (1370245).

2^2740489 is an apocalyptic number.

It is an amenable number.

2740489 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740489 is an equidigital number, since it uses as much as digits as its factorization.

2740489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2740489 is about 1655.4422369868. The cubic root of 2740489 is about 139.9402636305.

The spelling of 2740489 in words is "two million, seven hundred forty thousand, four hundred eighty-nine".