222909 has 8 divisors (see below), whose sum is σ = 301920. Its totient is φ = 146256.

The previous prime is 222883. The next prime is 222913. The reversal of 222909 is 909222.

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

It is not a de Polignac number, because 222909 - 2⁵ = 222877 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222919) 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, 354 + ... + 755.

It is an arithmetic number, because the mean of its divisors is an integer number (37740).

2²²²⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

222909 is a deficient number, since it is larger than the sum of its proper divisors (79011).

222909 is a wasteful number, since it uses less digits than its factorization.

222909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 222909 is about 472.1323966855. The cubic root of 222909 is about 60.6330201598.

The spelling of 222909 in words is "two hundred twenty-two thousand, nine hundred nine".