22449689 has 2 divisors, whose sum is σ = 22449690. Its totient is φ = 22449688.

The previous prime is 22449671. The next prime is 22449701. The reversal of 22449689 is 98694422.

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., 22401289 + 48400 = 4733^2 + 220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22449689 is a prime.

It is not a weakly prime, because it can be changed into another prime (22479689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11224844 + 11224845.

It is an arithmetic number, because the mean of its divisors is an integer number (11224845).

Almost surely, 2^22449689 is an apocalyptic number.

It is an amenable number.

22449689 is a deficient number, since it is larger than the sum of its proper divisors (1).

22449689 is an equidigital number, since it uses as much as digits as its factorization.

22449689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 22449689 is about 4738.1102773152. The cubic root of 22449689 is about 282.1002317947.

The spelling of 22449689 in words is "twenty-two million, four hundred forty-nine thousand, six hundred eighty-nine".