2269809 has 8 divisors (see below), whose sum is σ = 3362720. Its totient is φ = 1513188.

The previous prime is 2269807. The next prime is 2269819. The reversal of 2269809 is 9089622.

It is not a de Polignac number, because 2269809 - 2¹ = 2269807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2269807) 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, 42007 + ... + 42060.

It is an arithmetic number, because the mean of its divisors is an integer number (420340).

2^2269809 is an apocalyptic number.

It is an amenable number.

2269809 is a deficient number, since it is larger than the sum of its proper divisors (1092911).

2269809 is an equidigital number, since it uses as much as digits as its factorization.

2269809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84076 (or 84070 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 2269809 is about 1506.5885304223. The cubic root of 2269809 is about 131.4204967922.

The spelling of 2269809 in words is "two million, two hundred sixty-nine thousand, eight hundred nine".