8222609 has 2 divisors, whose sum is σ = 8222610. Its totient is φ = 8222608.

The previous prime is 8222597. The next prime is 8222623. The reversal of 8222609 is 9062228.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7728400 + 494209 = 2780^2 + 703^2 .

It is a cyclic number.

It is not a de Polignac number, because 8222609 - 2⁸ = 8222353 is a prime.

It is a super-2 number, since 2×8222609² = 135222597533762, which contains 22 as substring.

It is equal to p₅₅₃₇₅₄ and since 8222609 and 553754 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8222009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4111304 + 4111305.

It is an arithmetic number, because the mean of its divisors is an integer number (4111305).

Almost surely, 2^8222609 is an apocalyptic number.

It is an amenable number.

8222609 is a deficient number, since it is larger than the sum of its proper divisors (1).

8222609 is an equidigital number, since it uses as much as digits as its factorization.

8222609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 8222609 is about 2867.5091978928. The cubic root of 8222609 is about 201.8381296427.

The spelling of 8222609 in words is "eight million, two hundred twenty-two thousand, six hundred nine".