2691443 has 2 divisors, whose sum is σ = 2691444. Its totient is φ = 2691442.

The previous prime is 2691439. The next prime is 2691463. The reversal of 2691443 is 3441962.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2691443 - 2² = 2691439 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2691433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1345721 + 1345722.

It is an arithmetic number, because the mean of its divisors is an integer number (1345722).

2^2691443 is an apocalyptic number.

2691443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2691443 is an equidigital number, since it uses as much as digits as its factorization.

2691443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 2691443 is about 1640.5617940206. The cubic root of 2691443 is about 139.1004053467.

The spelling of 2691443 in words is "two million, six hundred ninety-one thousand, four hundred forty-three".