22227779 has 8 divisors (see below), whose sum is σ = 25479168. Its totient is φ = 18995400.

The previous prime is 22227773. The next prime is 22227797. The reversal of 22227779 is 97772222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22227779 - 2⁸ = 22227523 is a prime.

It is a pancake number, because a pancake can be divided into 22227779 parts by 6667 straight cuts.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22227773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2147 + ... + 7004.

It is an arithmetic number, because the mean of its divisors is an integer number (3184896).

Almost surely, 2^22227779 is an apocalyptic number.

22227779 is a deficient number, since it is larger than the sum of its proper divisors (3251389).

22227779 is an equidigital number, since it uses as much as digits as its factorization.

22227779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9505.

The product of its digits is 49392, while the sum is 38.

The square root of 22227779 is about 4714.6345563575. The cubic root of 22227779 is about 281.1676536537.

It can be divided in two parts, 2222 and 7779, that added together give a palindrome (10001).

The spelling of 22227779 in words is "twenty-two million, two hundred twenty-seven thousand, seven hundred seventy-nine".