22450709 has 2 divisors, whose sum is σ = 22450710. Its totient is φ = 22450708.

The previous prime is 22450663. The next prime is 22450721. The reversal of 22450709 is 90705422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20448484 + 2002225 = 4522^2 + 1415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22450709 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22450759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11225354 + 11225355.

It is an arithmetic number, because the mean of its divisors is an integer number (11225355).

Almost surely, 2^22450709 is an apocalyptic number.

It is an amenable number.

22450709 is a deficient number, since it is larger than the sum of its proper divisors (1).

22450709 is an equidigital number, since it uses as much as digits as its factorization.

22450709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 22450709 is about 4738.2179139419. The cubic root of 22450709 is about 282.1045041312.

The spelling of 22450709 in words is "twenty-two million, four hundred fifty thousand, seven hundred nine".