2440409209 has 8 divisors (see below), whose sum is σ = 2804621760. Its totient is φ = 2080092336.

The previous prime is 2440409207. The next prime is 2440409233. The reversal of 2440409209 is 9029040442.

2440409209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2440409209 - 2¹ = 2440409207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2440409207) 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, 972574 + ... + 975079.

It is an arithmetic number, because the mean of its divisors is an integer number (350577720).

Almost surely, 2^2440409209 is an apocalyptic number.

It is an amenable number.

2440409209 is a deficient number, since it is larger than the sum of its proper divisors (364212551).

2440409209 is a wasteful number, since it uses less digits than its factorization.

2440409209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1947839.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 2440409209 is about 49400.4980642908. The cubic root of 2440409209 is about 1346.3383552157.

The spelling of 2440409209 in words is "two billion, four hundred forty million, four hundred nine thousand, two hundred nine".