222949 has 4 divisors (see below), whose sum is σ = 225036. Its totient is φ = 220864.

The previous prime is 222947. The next prime is 222953. The reversal of 222949 is 949222.

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 20449 + 202500 = 143^2 + 450^2 .

It is a cyclic number.

It is not a de Polignac number, because 222949 - 2¹ = 222947 is a prime.

It is a Duffinian number.

222949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222941) 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, 874 + ... + 1099.

It is an arithmetic number, because the mean of its divisors is an integer number (56259).

2²²²⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

222949 is a deficient number, since it is larger than the sum of its proper divisors (2087).

222949 is a wasteful number, since it uses less digits than its factorization.

222949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086.

The product of its digits is 2592, while the sum is 28.

The square root of 222949 is about 472.1747557843. The cubic root of 222949 is about 60.6366467155.

It can be divided in two parts, 2229 and 49, that added together give a triangular number (2278 = T₆₇).

The spelling of 222949 in words is "two hundred twenty-two thousand, nine hundred forty-nine".