2227809 has 12 divisors (see below), whose sum is σ = 3079856. Its totient is φ = 1432368.

The previous prime is 2227801. The next prime is 2227831. The reversal of 2227809 is 9087222.

It is not a de Polignac number, because 2227809 - 2³ = 2227801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2227801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2082 + ... + 2964.

2^2227809 is an apocalyptic number.

2227809 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2227809 is a deficient number, since it is larger than the sum of its proper divisors (852047).

2227809 is an equidigital number, since it uses as much as digits as its factorization.

2227809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 915 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2227809 is about 1492.5846709651. The cubic root of 2227809 is about 130.6048540011.

The spelling of 2227809 in words is "two million, two hundred twenty-seven thousand, eight hundred nine".