22427779 has 12 divisors (see below), whose sum is σ = 25176312. Its totient is φ = 19802400.

The previous prime is 22427753. The next prime is 22427837. The reversal of 22427779 is 97772422.

It is not a de Polignac number, because 22427779 - 2¹⁹ = 21903491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22427719) 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 in 11 ways as a sum of consecutive naturals, for example, 100462 + ... + 100684.

It is an arithmetic number, because the mean of its divisors is an integer number (2098026).

Almost surely, 2^22427779 is an apocalyptic number.

22427779 is a deficient number, since it is larger than the sum of its proper divisors (2748533).

22427779 is an equidigital number, since it uses as much as digits as its factorization.

22427779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 275 counting only the distinct ones).

The product of its digits is 98784, while the sum is 40.

The square root of 22427779 is about 4735.7976096958. The cubic root of 22427779 is about 282.0084290692.

The spelling of 22427779 in words is "twenty-two million, four hundred twenty-seven thousand, seven hundred seventy-nine".