2947843 has 2 divisors, whose sum is σ = 2947844. Its totient is φ = 2947842.

The previous prime is 2947823. The next prime is 2947853. The reversal of 2947843 is 3487492.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2947843 - 2⁹ = 2947331 is a prime.

It is not a weakly prime, because it can be changed into another prime (2947823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1473921 + 1473922.

It is an arithmetic number, because the mean of its divisors is an integer number (1473922).

2^2947843 is an apocalyptic number.

2947843 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947843 is an equidigital number, since it uses as much as digits as its factorization.

2947843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 2947843 is about 1716.9283619301. The cubic root of 2947843 is about 143.3842502837.

The spelling of 2947843 in words is "two million, nine hundred forty-seven thousand, eight hundred forty-three".