2289797209 has 4 divisors (see below), whose sum is σ = 2616911104. Its totient is φ = 1962683316.

The previous prime is 2289797149. The next prime is 2289797231. The reversal of 2289797209 is 9027979822.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9027979822 = 2 ⋅4513989911.

It is a cyclic number.

It is not a de Polignac number, because 2289797209 - 2⁹ = 2289796697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2289797209.

It is not an unprimeable number, because it can be changed into a prime (2289797009) 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, 163556937 + ... + 163556950.

It is an arithmetic number, because the mean of its divisors is an integer number (654227776).

Almost surely, 2^2289797209 is an apocalyptic number.

It is an amenable number.

2289797209 is a deficient number, since it is larger than the sum of its proper divisors (327113895).

2289797209 is an equidigital number, since it uses as much as digits as its factorization.

2289797209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327113894.

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 2289797209 is about 47851.8255555627. The cubic root of 2289797209 is about 1318.0513812027.

The spelling of 2289797209 in words is "two billion, two hundred eighty-nine million, seven hundred ninety-seven thousand, two hundred nine".