8422385 has 4 divisors (see below), whose sum is σ = 10106868. Its totient is φ = 6737904.

The previous prime is 8422357. The next prime is 8422387. The reversal of 8422385 is 5832248.

8422385 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3876961 + 4545424 = 1969^2 + 2132^2 .

It is a cyclic number.

It is not a de Polignac number, because 8422385 - 2¹⁴ = 8406001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8422387) 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, 842234 + ... + 842243.

It is an arithmetic number, because the mean of its divisors is an integer number (2526717).

Almost surely, 2^8422385 is an apocalyptic number.

It is an amenable number.

8422385 is a deficient number, since it is larger than the sum of its proper divisors (1684483).

8422385 is a wasteful number, since it uses less digits than its factorization.

8422385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1684482.

The product of its digits is 15360, while the sum is 32.

The square root of 8422385 is about 2902.1345592512. The cubic root of 8422385 is about 203.4596828854.

The spelling of 8422385 in words is "eight million, four hundred twenty-two thousand, three hundred eighty-five".