2249609309 has 2 divisors, whose sum is σ = 2249609310. Its totient is φ = 2249609308.

The previous prime is 2249609281. The next prime is 2249609359. The reversal of 2249609309 is 9039069422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1663824100 + 585785209 = 40790^2 + 24203^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2249609309 is a prime.

It is a super-4 number, since 4×2249609309⁴ (a number of 39 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2249609309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2249609359) 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 as a sum of consecutive naturals, namely, 1124804654 + 1124804655.

It is an arithmetic number, because the mean of its divisors is an integer number (1124804655).

Almost surely, 2^2249609309 is an apocalyptic number.

It is an amenable number.

2249609309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2249609309 is an equidigital number, since it uses as much as digits as its factorization.

2249609309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 2249609309 is about 47430.0464789989. The cubic root of 2249609309 is about 1310.2948482641.

The spelling of 2249609309 in words is "two billion, two hundred forty-nine million, six hundred nine thousand, three hundred nine".