8422819 has 4 divisors (see below), whose sum is σ = 8560960. Its totient is φ = 8284680.

The previous prime is 8422811. The next prime is 8422831. The reversal of 8422819 is 9182248.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8422819 - 2³ = 8422811 is a prime.

It is a super-2 number, since 2×8422819² = 141887759813522, which contains 22 as substring.

It is a Duffinian number.

8422819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8422811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68979 + ... + 69100.

It is an arithmetic number, because the mean of its divisors is an integer number (2140240).

Almost surely, 2^8422819 is an apocalyptic number.

8422819 is a deficient number, since it is larger than the sum of its proper divisors (138141).

8422819 is a wasteful number, since it uses less digits than its factorization.

8422819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138140.

The product of its digits is 9216, while the sum is 34.

The square root of 8422819 is about 2902.2093308375. The cubic root of 8422819 is about 203.4631775403.

The spelling of 8422819 in words is "eight million, four hundred twenty-two thousand, eight hundred nineteen".