2747749 has 2 divisors, whose sum is σ = 2747750. Its totient is φ = 2747748.

The previous prime is 2747713. The next prime is 2747753. The reversal of 2747749 is 9477472.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2502724 + 245025 = 1582^2 + 495^2 .

It is a cyclic number.

It is not a de Polignac number, because 2747749 - 2⁷ = 2747621 is a prime.

It is a Chen prime.

2747749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2747249) 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, 1373874 + 1373875.

It is an arithmetic number, because the mean of its divisors is an integer number (1373875).

2^2747749 is an apocalyptic number.

It is an amenable number.

2747749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2747749 is an equidigital number, since it uses as much as digits as its factorization.

2747749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 40.

The square root of 2747749 is about 1657.6335541971. The cubic root of 2747749 is about 140.0637294887.

The spelling of 2747749 in words is "two million, seven hundred forty-seven thousand, seven hundred forty-nine".