22843549 has 2 divisors, whose sum is σ = 22843550. Its totient is φ = 22843548.

The previous prime is 22843547. The next prime is 22843573. The reversal of 22843549 is 94534822.

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., 18404100 + 4439449 = 4290^2 + 2107^2 .

It is a cyclic number.

It is not a de Polignac number, because 22843549 - 2¹ = 22843547 is a prime.

Together with 22843547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22843543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11421774 + 11421775.

It is an arithmetic number, because the mean of its divisors is an integer number (11421775).

Almost surely, 2^22843549 is an apocalyptic number.

It is an amenable number.

22843549 is a deficient number, since it is larger than the sum of its proper divisors (1).

22843549 is an equidigital number, since it uses as much as digits as its factorization.

22843549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 22843549 is about 4779.4925462856. The cubic root of 22843549 is about 283.7404103185.

It can be divided in two parts, 228435 and 49, that added together give a square (228484 = 478²).

The spelling of 22843549 in words is "twenty-two million, eight hundred forty-three thousand, five hundred forty-nine".