222923209 has 8 divisors (see below), whose sum is σ = 229881600. Its totient is φ = 216057216.

The previous prime is 222923189. The next prime is 222923213. The reversal of 222923209 is 902329222.

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

It is a cyclic number.

It is not a de Polignac number, because 222923209 - 2⁵ = 222923177 is a prime.

It is a super-2 number, since 2×222923209² = 99389514221715362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222923509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18184 + ... + 27865.

It is an arithmetic number, because the mean of its divisors is an integer number (28735200).

Almost surely, 2^222923209 is an apocalyptic number.

It is an amenable number.

222923209 is a deficient number, since it is larger than the sum of its proper divisors (6958391).

222923209 is a wasteful number, since it uses less digits than its factorization.

222923209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46199.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 222923209 is about 14930.6131488295. The cubic root of 222923209 is about 606.3430845272.

The spelling of 222923209 in words is "two hundred twenty-two million, nine hundred twenty-three thousand, two hundred nine".