2947723 has 2 divisors, whose sum is σ = 2947724. Its totient is φ = 2947722.

The previous prime is 2947709. The next prime is 2947729. The reversal of 2947723 is 3277492.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2947723 - 2⁵ = 2947691 is a prime.

It is not a weakly prime, because it can be changed into another prime (2947729) 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, 1473861 + 1473862.

It is an arithmetic number, because the mean of its divisors is an integer number (1473862).

2^2947723 is an apocalyptic number.

2947723 is a deficient number, since it is larger than the sum of its proper divisors (1).

2947723 is an equidigital number, since it uses as much as digits as its factorization.

2947723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 34.

The square root of 2947723 is about 1716.8934154455. The cubic root of 2947723 is about 143.3823046415.

The spelling of 2947723 in words is "two million, nine hundred forty-seven thousand, seven hundred twenty-three".