44222209 has 2 divisors, whose sum is σ = 44222210. Its totient is φ = 44222208.

The previous prime is 44222207. The next prime is 44222239. The reversal of 44222209 is 90222244.

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., 39727809 + 4494400 = 6303^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 44222209 - 2¹ = 44222207 is a prime.

Together with 44222207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (44222207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22111104 + 22111105.

It is an arithmetic number, because the mean of its divisors is an integer number (22111105).

Almost surely, 2^44222209 is an apocalyptic number.

It is an amenable number.

44222209 is a deficient number, since it is larger than the sum of its proper divisors (1).

44222209 is an equidigital number, since it uses as much as digits as its factorization.

44222209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 44222209 is about 6649.9781202648. The cubic root of 44222209 is about 353.6281352593.

The spelling of 44222209 in words is "forty-four million, two hundred twenty-two thousand, two hundred nine".