2212909 has 8 divisors (see below), whose sum is σ = 2309472. Its totient is φ = 2118480.

The previous prime is 2212891. The next prime is 2212921. The reversal of 2212909 is 9092122.

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 2212909 - 2⁵ = 2212877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212939) 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, 1794 + ... + 2764.

It is an arithmetic number, because the mean of its divisors is an integer number (288684).

2^2212909 is an apocalyptic number.

It is an amenable number.

2212909 is a deficient number, since it is larger than the sum of its proper divisors (96563).

2212909 is an equidigital number, since it uses as much as digits as its factorization.

2212909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2212909 is about 1487.5849555572. The cubic root of 2212909 is about 130.3130326125.

The spelling of 2212909 in words is "two million, two hundred twelve thousand, nine hundred nine".