8422005 has 16 divisors (see below), whose sum is σ = 13584384. Its totient is φ = 4455360.

The previous prime is 8421991. The next prime is 8422019. The reversal of 8422005 is 5002248.

It is an interprime number because it is at equal distance from previous prime (8421991) and next prime (8422019).

It is not a de Polignac number, because 8422005 - 2⁴ = 8421989 is a prime.

It is a d-powerful number, because it can be written as 8⁵ + 4 + 2²² + 2²² + 0 + 0 + 5⁴ .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306 + ... + 4115.

It is an arithmetic number, because the mean of its divisors is an integer number (849024).

Almost surely, 2^8422005 is an apocalyptic number.

It is an amenable number.

8422005 is a deficient number, since it is larger than the sum of its proper divisors (5162379).

8422005 is a wasteful number, since it uses less digits than its factorization.

8422005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 8422005 is about 2902.0690894601. The cubic root of 8422005 is about 203.4566229508.

The spelling of 8422005 in words is "eight million, four hundred twenty-two thousand, five".