22226909 has 2 divisors, whose sum is σ = 22226910. Its totient is φ = 22226908.

The previous prime is 22226873. The next prime is 22226921. The reversal of 22226909 is 90962222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20839225 + 1387684 = 4565^2 + 1178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22226909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22226929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11113454 + 11113455.

It is an arithmetic number, because the mean of its divisors is an integer number (11113455).

Almost surely, 2^22226909 is an apocalyptic number.

It is an amenable number.

22226909 is a deficient number, since it is larger than the sum of its proper divisors (1).

22226909 is an equidigital number, since it uses as much as digits as its factorization.

22226909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 22226909 is about 4714.5422895547. The cubic root of 22226909 is about 281.1639852853.

The spelling of 22226909 in words is "twenty-two million, two hundred twenty-six thousand, nine hundred nine".