2740919 has 2 divisors, whose sum is σ = 2740920. Its totient is φ = 2740918.

The previous prime is 2740889. The next prime is 2740937. The reversal of 2740919 is 9190472.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2740919 is a prime.

It is a super-2 number, since 2×2740919² = 15025273929122, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2740999) 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, 1370459 + 1370460.

It is an arithmetic number, because the mean of its divisors is an integer number (1370460).

2^2740919 is an apocalyptic number.

2740919 is a deficient number, since it is larger than the sum of its proper divisors (1).

2740919 is an equidigital number, since it uses as much as digits as its factorization.

2740919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2740919 is about 1655.5721065541. The cubic root of 2740919 is about 139.9475824175.

The spelling of 2740919 in words is "two million, seven hundred forty thousand, nine hundred nineteen".