816443723 has 2 divisors, whose sum is σ = 816443724. Its totient is φ = 816443722.

The previous prime is 816443713. The next prime is 816443729. The reversal of 816443723 is 327344618.

816443723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 816443723 - 2¹⁰ = 816442699 is a prime.

It is a super-2 number, since 2×816443723² = 1333160705652201458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (816443729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408221861 + 408221862.

It is an arithmetic number, because the mean of its divisors is an integer number (408221862).

Almost surely, 2^816443723 is an apocalyptic number.

816443723 is a deficient number, since it is larger than the sum of its proper divisors (1).

816443723 is an equidigital number, since it uses as much as digits as its factorization.

816443723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

The square root of 816443723 is about 28573.4793646136. The cubic root of 816443723 is about 934.6350956746.

The spelling of 816443723 in words is "eight hundred sixteen million, four hundred forty-three thousand, seven hundred twenty-three".