222449138 has 8 divisors (see below), whose sum is σ = 333737820. Its totient is φ = 111203200.

The previous prime is 222449137. The next prime is 222449141. The reversal of 222449138 is 831944222.

222449138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 221920609 + 528529 = 14897^2 + 727^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 222449098 and 222449107.

It is not an unprimeable number, because it can be changed into a prime (222449137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11738 + ... + 24138.

Almost surely, 2^222449138 is an apocalyptic number.

222449138 is a deficient number, since it is larger than the sum of its proper divisors (111288682).

222449138 is a wasteful number, since it uses less digits than its factorization.

222449138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21372.

The product of its digits is 27648, while the sum is 35.

The square root of 222449138 is about 14914.7288946196. The cubic root of 222449138 is about 605.9129608098.

The spelling of 222449138 in words is "two hundred twenty-two million, four hundred forty-nine thousand, one hundred thirty-eight".