222939169 has 4 divisors (see below), whose sum is σ = 224912196. Its totient is φ = 220966144.

The previous prime is 222939163. The next prime is 222939191. The reversal of 222939169 is 961939222.

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 18792225 + 204146944 = 4335^2 + 14288^2 .

It is a cyclic number.

It is not a de Polignac number, because 222939169 - 2⁵ = 222939137 is a prime.

It is a super-2 number, since 2×222939169² = 99403746148821122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222939163) 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 3 ways as a sum of consecutive naturals, for example, 986344 + ... + 986569.

It is an arithmetic number, because the mean of its divisors is an integer number (56228049).

Almost surely, 2^222939169 is an apocalyptic number.

It is an amenable number.

222939169 is a deficient number, since it is larger than the sum of its proper divisors (1973027).

222939169 is a wasteful number, since it uses less digits than its factorization.

222939169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973026.

The product of its digits is 104976, while the sum is 43.

The square root of 222939169 is about 14931.1476116205. The cubic root of 222939169 is about 606.3575543899.

The spelling of 222939169 in words is "two hundred twenty-two million, nine hundred thirty-nine thousand, one hundred sixty-nine".