8664419 has 2 divisors, whose sum is σ = 8664420. Its totient is φ = 8664418.

The previous prime is 8664413. The next prime is 8664421. The reversal of 8664419 is 9144668.

8664419 is digitally balanced in base 3, 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 a de Polignac number, because none of the positive numbers 2^k-8664419 is a prime.

It is a super-2 number, since 2×8664419² = 150144313215122, which contains 22 as substring.

Together with 8664421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8664413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4332209 + 4332210.

It is an arithmetic number, because the mean of its divisors is an integer number (4332210).

Almost surely, 2^8664419 is an apocalyptic number.

8664419 is a deficient number, since it is larger than the sum of its proper divisors (1).

8664419 is an equidigital number, since it uses as much as digits as its factorization.

8664419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 38.

The square root of 8664419 is about 2943.5385168195. The cubic root of 8664419 is about 205.3902461310.

Subtracting 8664419 from its reverse (9144668), we obtain a square (480249 = 693²).

The spelling of 8664419 in words is "eight million, six hundred sixty-four thousand, four hundred nineteen".