2243679909 has 4 divisors (see below), whose sum is σ = 2991573216. Its totient is φ = 1495786604.

The previous prime is 2243679887. The next prime is 2243679913. The reversal of 2243679909 is 9099763422.

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 2243679909 - 2¹¹ = 2243677861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243679959) 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, 373946649 + ... + 373946654.

It is an arithmetic number, because the mean of its divisors is an integer number (747893304).

Almost surely, 2^2243679909 is an apocalyptic number.

It is an amenable number.

2243679909 is a deficient number, since it is larger than the sum of its proper divisors (747893307).

2243679909 is an equidigital number, since it uses as much as digits as its factorization.

2243679909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747893306.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 2243679909 is about 47367.4984456642. The cubic root of 2243679909 is about 1309.1426336417.

The spelling of 2243679909 in words is "two billion, two hundred forty-three million, six hundred seventy-nine thousand, nine hundred nine".