22223779 has 2 divisors, whose sum is σ = 22223780. Its totient is φ = 22223778.

The previous prime is 22223771. The next prime is 22223813. The reversal of 22223779 is 97732222.

It is an a-pointer prime, because the next prime (22223813) can be obtained adding 22223779 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22223779 - 2³ = 22223771 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (22223771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111889 + 11111890.

It is an arithmetic number, because the mean of its divisors is an integer number (11111890).

Almost surely, 2^22223779 is an apocalyptic number.

22223779 is a deficient number, since it is larger than the sum of its proper divisors (1).

22223779 is an equidigital number, since it uses as much as digits as its factorization.

22223779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21168, while the sum is 34.

The square root of 22223779 is about 4714.2103262370. The cubic root of 22223779 is about 281.1507868001.

It can be divided in two parts, 2222 and 3779, that multiplied together give a palindrome (8396938).

The spelling of 22223779 in words is "twenty-two million, two hundred twenty-three thousand, seven hundred seventy-nine".