22631449 has 2 divisors, whose sum is σ = 22631450. Its totient is φ = 22631448.

The previous prime is 22631443. The next prime is 22631473. The reversal of 22631449 is 94413622.

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., 21715600 + 915849 = 4660^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 22631449 - 2¹³ = 22623257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22631449.

It is not a weakly prime, because it can be changed into another prime (22631443) 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, 11315724 + 11315725.

It is an arithmetic number, because the mean of its divisors is an integer number (11315725).

Almost surely, 2^22631449 is an apocalyptic number.

It is an amenable number.

22631449 is a deficient number, since it is larger than the sum of its proper divisors (1).

22631449 is an equidigital number, since it uses as much as digits as its factorization.

22631449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 31.

The square root of 22631449 is about 4757.2522531394. The cubic root of 22631449 is about 282.8595114853.

The spelling of 22631449 in words is "twenty-two million, six hundred thirty-one thousand, four hundred forty-nine".