7966843 has 2 divisors, whose sum is σ = 7966844. Its totient is φ = 7966842.

The previous prime is 7966831. The next prime is 7966853. The reversal of 7966843 is 3486697.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7966843 - 2²¹ = 5869691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7966843.

It is not a weakly prime, because it can be changed into another prime (7966853) 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, 3983421 + 3983422.

It is an arithmetic number, because the mean of its divisors is an integer number (3983422).

Almost surely, 2^7966843 is an apocalyptic number.

7966843 is a deficient number, since it is larger than the sum of its proper divisors (1).

7966843 is an equidigital number, since it uses as much as digits as its factorization.

7966843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 43.

The square root of 7966843 is about 2822.5596539312. The cubic root of 7966843 is about 199.7233090538.

The spelling of 7966843 in words is "seven million, nine hundred sixty-six thousand, eight hundred forty-three".