8422309 has 8 divisors (see below), whose sum is σ = 9789120. Its totient is φ = 7096416.

The previous prime is 8422307. The next prime is 8422313. The reversal of 8422309 is 9032248.

8422309 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8422309 - 2¹ = 8422307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8422303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9784 + ... + 10609.

It is an arithmetic number, because the mean of its divisors is an integer number (1223640).

Almost surely, 2^8422309 is an apocalyptic number.

It is an amenable number.

8422309 is a deficient number, since it is larger than the sum of its proper divisors (1366811).

8422309 is a wasteful number, since it uses less digits than its factorization.

8422309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20459.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 8422309 is about 2902.1214654111. The cubic root of 8422309 is about 203.4590709059.

The spelling of 8422309 in words is "eight million, four hundred twenty-two thousand, three hundred nine".