22274909 has 2 divisors, whose sum is σ = 22274910. Its totient is φ = 22274908.

The previous prime is 22274891. The next prime is 22274921. The reversal of 22274909 is 90947222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21362884 + 912025 = 4622^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 22274909 - 2¹² = 22270813 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22274969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11137454 + 11137455.

It is an arithmetic number, because the mean of its divisors is an integer number (11137455).

Almost surely, 2^22274909 is an apocalyptic number.

It is an amenable number.

22274909 is a deficient number, since it is larger than the sum of its proper divisors (1).

22274909 is an equidigital number, since it uses as much as digits as its factorization.

22274909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 22274909 is about 4719.6301761897. The cubic root of 22274909 is about 281.3662351491.

It can be divided in two parts, 22274 and 909, that multiplied together give a triangular number (20247066 = T₆₃₆₃).

The spelling of 22274909 in words is "twenty-two million, two hundred seventy-four thousand, nine hundred nine".