222744009 has 16 divisors (see below), whose sum is σ = 299971584. Its totient is φ = 147014400.

The previous prime is 222743987. The next prime is 222744019. The reversal of 222744009 is 900447222.

It is not a de Polignac number, because 222744009 - 2⁹ = 222743497 is a prime.

It is a super-2 number, since 2×222744009² = 99229787090784162, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222744019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 137287 + ... + 138899.

It is an arithmetic number, because the mean of its divisors is an integer number (18748224).

Almost surely, 2^222744009 is an apocalyptic number.

It is an amenable number.

222744009 is a deficient number, since it is larger than the sum of its proper divisors (77227575).

222744009 is a wasteful number, since it uses less digits than its factorization.

222744009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2048.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 222744009 is about 14924.6108491980. The cubic root of 222744009 is about 606.1805684612.

The spelling of 222744009 in words is "two hundred twenty-two million, seven hundred forty-four thousand, nine".