8210819 has 2 divisors, whose sum is σ = 8210820. Its totient is φ = 8210818.

The previous prime is 8210809. The next prime is 8210827. The reversal of 8210819 is 9180128.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8210819 - 2⁴ = 8210803 is a prime.

It is a super-2 number, since 2×8210819² = 134835097301522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8210791 and 8210800.

It is not a weakly prime, because it can be changed into another prime (8210809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4105409 + 4105410.

It is an arithmetic number, because the mean of its divisors is an integer number (4105410).

Almost surely, 2^8210819 is an apocalyptic number.

8210819 is a deficient number, since it is larger than the sum of its proper divisors (1).

8210819 is an equidigital number, since it uses as much as digits as its factorization.

8210819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 8210819 is about 2865.4526693003. The cubic root of 8210819 is about 201.7416148658.

It can be divided in two parts, 82 and 10819, that added together give a palindrome (10901).

The spelling of 8210819 in words is "eight million, two hundred ten thousand, eight hundred nineteen".