2240309 has 4 divisors (see below), whose sum is σ = 2358240. Its totient is φ = 2122380.

The previous prime is 2240299. The next prime is 2240317. The reversal of 2240309 is 9030422.

2240309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2240309 - 2¹⁶ = 2174773 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 (2240369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58937 + ... + 58974.

It is an arithmetic number, because the mean of its divisors is an integer number (589560).

2^2240309 is an apocalyptic number.

It is an amenable number.

2240309 is a deficient number, since it is larger than the sum of its proper divisors (117931).

2240309 is a wasteful number, since it uses less digits than its factorization.

2240309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117930.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 2240309 is about 1496.7661808045. The cubic root of 2240309 is about 130.8486685565.

The spelling of 2240309 in words is "two million, two hundred forty thousand, three hundred nine".