22222309 has 4 divisors (see below), whose sum is σ = 22327840. Its totient is φ = 22116780.

The previous prime is 22222273. The next prime is 22222327. The reversal of 22222309 is 90322222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90322222 = 2 ⋅45161111.

It is a cyclic number.

It is not a de Polignac number, because 22222309 - 2¹³ = 22214117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22222309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52449 + ... + 52870.

It is an arithmetic number, because the mean of its divisors is an integer number (5581960).

Almost surely, 2^22222309 is an apocalyptic number.

It is an amenable number.

22222309 is a deficient number, since it is larger than the sum of its proper divisors (105531).

22222309 is a wasteful number, since it uses less digits than its factorization.

22222309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105530.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22222309 is about 4714.0544120746. The cubic root of 22222309 is about 281.1445877228.

The spelling of 22222309 in words is "twenty-two million, two hundred twenty-two thousand, three hundred nine".