222445994 has 4 divisors (see below), whose sum is σ = 333668994. Its totient is φ = 111222996.

The previous prime is 222445973. The next prime is 222445997. The reversal of 222445994 is 499544222.

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

It can be written as a sum of positive squares in only one way, i.e., 156625225 + 65820769 = 12515^2 + 8113^2 .

It is not an unprimeable number, because it can be changed into a prime (222445997) 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 as a sum of consecutive naturals, namely, 55611497 + ... + 55611500.

Almost surely, 2^222445994 is an apocalyptic number.

222445994 is a deficient number, since it is larger than the sum of its proper divisors (111223000).

222445994 is a wasteful number, since it uses less digits than its factorization.

222445994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111222999.

The product of its digits is 207360, while the sum is 41.

The square root of 222445994 is about 14914.6234950803. The cubic root of 222445994 is about 605.9101062257.

The spelling of 222445994 in words is "two hundred twenty-two million, four hundred forty-five thousand, nine hundred ninety-four".