864418843 has 2 divisors, whose sum is σ = 864418844. Its totient is φ = 864418842.

The previous prime is 864418781. The next prime is 864418847. The reversal of 864418843 is 348814468.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 864418843 - 2¹⁷ = 864287771 is a prime.

It is a super-2 number, since 2×864418843² = 1494439872266917298, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 864418793 and 864418802.

It is not a weakly prime, because it can be changed into another prime (864418847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432209421 + 432209422.

It is an arithmetic number, because the mean of its divisors is an integer number (432209422).

Almost surely, 2^864418843 is an apocalyptic number.

864418843 is a deficient number, since it is larger than the sum of its proper divisors (1).

864418843 is an equidigital number, since it uses as much as digits as its factorization.

864418843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 589824, while the sum is 46.

The square root of 864418843 is about 29401.0007142614. Note that the first 3 decimals coincide. The cubic root of 864418843 is about 952.5945118315.

The spelling of 864418843 in words is "eight hundred sixty-four million, four hundred eighteen thousand, eight hundred forty-three".