2290809 has 8 divisors (see below), whose sum is σ = 3063520. Its totient is φ = 1522656.

The previous prime is 2290789. The next prime is 2290817. The reversal of 2290809 is 9080922.

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

It is not a de Polignac number, because 2290809 - 2¹³ = 2282617 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 (2290829) 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, 294 + ... + 2160.

It is an arithmetic number, because the mean of its divisors is an integer number (382940).

2^2290809 is an apocalyptic number.

It is an amenable number.

2290809 is a deficient number, since it is larger than the sum of its proper divisors (772711).

2290809 is a wasteful number, since it uses less digits than its factorization.

2290809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 2290809 is about 1513.5418725625. The cubic root of 2290809 is about 131.8245488079.

The spelling of 2290809 in words is "two million, two hundred ninety thousand, eight hundred nine".