2743991 has 2 divisors, whose sum is σ = 2743992. Its totient is φ = 2743990.

The previous prime is 2743967. The next prime is 2744003. The reversal of 2743991 is 1993472.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2743991 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2743901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1371995 + 1371996.

It is an arithmetic number, because the mean of its divisors is an integer number (1371996).

2^2743991 is an apocalyptic number.

2743991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2743991 is an equidigital number, since it uses as much as digits as its factorization.

2743991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 2743991 is about 1656.4996226984. The cubic root of 2743991 is about 139.9998469386. Note that the first 3 decimals are identical.

The spelling of 2743991 in words is "two million, seven hundred forty-three thousand, nine hundred ninety-one".