222009729 has 8 divisors (see below), whose sum is σ = 297252480. Its totient is φ = 147386736.

The previous prime is 222009727. The next prime is 222009757. The reversal of 222009729 is 927900222.

222009729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 222009729 - 2¹ = 222009727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222009729.

It is not an unprimeable number, because it can be changed into a prime (222009721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154102 + ... + 155535.

It is an arithmetic number, because the mean of its divisors is an integer number (37156560).

Almost surely, 2^222009729 is an apocalyptic number.

It is an amenable number.

222009729 is a deficient number, since it is larger than the sum of its proper divisors (75242751).

222009729 is a wasteful number, since it uses less digits than its factorization.

222009729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309879.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 222009729 is about 14899.9909060375. The cubic root of 222009729 is about 605.5137398029.

The spelling of 222009729 in words is "two hundred twenty-two million, nine thousand, seven hundred twenty-nine".