2290709 has 4 divisors (see below), whose sum is σ = 2296140. Its totient is φ = 2285280.

The previous prime is 2290703. The next prime is 2290721. The reversal of 2290709 is 9070922.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 592900 + 1697809 = 770^2 + 1303^2 .

It is a cyclic number.

It is not a de Polignac number, because 2290709 - 2¹⁶ = 2225173 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 (2290703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024 + ... + 2945.

It is an arithmetic number, because the mean of its divisors is an integer number (574035).

2^2290709 is an apocalyptic number.

It is an amenable number.

2290709 is a deficient number, since it is larger than the sum of its proper divisors (5431).

2290709 is an equidigital number, since it uses as much as digits as its factorization.

2290709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5430.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 2290709 is about 1513.5088371067. The cubic root of 2290709 is about 131.8226306141.

The spelling of 2290709 in words is "two million, two hundred ninety thousand, seven hundred nine".