22489409 has 2 divisors, whose sum is σ = 22489410. Its totient is φ = 22489408.

The previous prime is 22489339. The next prime is 22489429. The reversal of 22489409 is 90498422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21160000 + 1329409 = 4600^2 + 1153^2 .

It is a cyclic number.

It is not a de Polignac number, because 22489409 - 2²⁰ = 21440833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22489429) 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, 11244704 + 11244705.

It is an arithmetic number, because the mean of its divisors is an integer number (11244705).

Almost surely, 2^22489409 is an apocalyptic number.

It is an amenable number.

22489409 is a deficient number, since it is larger than the sum of its proper divisors (1).

22489409 is an equidigital number, since it uses as much as digits as its factorization.

22489409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 22489409 is about 4742.2999694241. The cubic root of 22489409 is about 282.2665061009.

The spelling of 22489409 in words is "twenty-two million, four hundred eighty-nine thousand, four hundred nine".