8719819 has 2 divisors, whose sum is σ = 8719820. Its totient is φ = 8719818.

The previous prime is 8719817. The next prime is 8719831. The reversal of 8719819 is 9189178.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8719819 - 2¹ = 8719817 is a prime.

It is a super-2 number, since 2×8719819² = 152070486785522, which contains 22 as substring.

Together with 8719817, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (8719813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4359909 + 4359910.

It is an arithmetic number, because the mean of its divisors is an integer number (4359910).

Almost surely, 2^8719819 is an apocalyptic number.

8719819 is a deficient number, since it is larger than the sum of its proper divisors (1).

8719819 is an equidigital number, since it uses as much as digits as its factorization.

8719819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 43.

The square root of 8719819 is about 2952.9339647205. The cubic root of 8719819 is about 205.8270691853.

The spelling of 8719819 in words is "eight million, seven hundred nineteen thousand, eight hundred nineteen".