2228805709 has 4 divisors (see below), whose sum is σ = 2400252316. Its totient is φ = 2057359104.

The previous prime is 2228805707. The next prime is 2228805727. The reversal of 2228805709 is 9075088222.

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 324792484 + 1904013225 = 18022^2 + 43635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2228805709 - 2¹ = 2228805707 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 (2228805707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85723284 + ... + 85723309.

It is an arithmetic number, because the mean of its divisors is an integer number (600063079).

Almost surely, 2^2228805709 is an apocalyptic number.

It is an amenable number.

2228805709 is a deficient number, since it is larger than the sum of its proper divisors (171446607).

2228805709 is a wasteful number, since it uses less digits than its factorization.

2228805709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171446606.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 2228805709 is about 47210.2288598562. The cubic root of 2228805709 is about 1306.2432838524.

The spelling of 2228805709 in words is "two billion, two hundred twenty-eight million, eight hundred five thousand, seven hundred nine".