222984169 has 4 divisors (see below), whose sum is σ = 223789444. Its totient is φ = 222178896.

The previous prime is 222984137. The next prime is 222984173. The reversal of 222984169 is 961489222.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27962944 + 195021225 = 5288^2 + 13965^2 .

It is a cyclic number.

It is not a de Polignac number, because 222984169 - 2⁵ = 222984137 is a prime.

It is a super-2 number, since 2×222984169² = 99443879249241122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222984109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402222 + ... + 402775.

It is an arithmetic number, because the mean of its divisors is an integer number (55947361).

Almost surely, 2^222984169 is an apocalyptic number.

It is an amenable number.

222984169 is a deficient number, since it is larger than the sum of its proper divisors (805275).

222984169 is an equidigital number, since it uses as much as digits as its factorization.

222984169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805274.

The product of its digits is 124416, while the sum is 43.

The square root of 222984169 is about 14932.6544525747. The cubic root of 222984169 is about 606.3983491568.

The spelling of 222984169 in words is "two hundred twenty-two million, nine hundred eighty-four thousand, one hundred sixty-nine".