2089688449 has 2 divisors, whose sum is σ = 2089688450. Its totient is φ = 2089688448.

The previous prime is 2089688431. The next prime is 2089688477. The reversal of 2089688449 is 9448869802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2074164849 + 15523600 = 45543^2 + 3940^2 .

It is a cyclic number.

It is not a de Polignac number, because 2089688449 - 2⁹ = 2089687937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2089688393 and 2089688402.

It is not a weakly prime, because it can be changed into another prime (2089688149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044844224 + 1044844225.

It is an arithmetic number, because the mean of its divisors is an integer number (1044844225).

Almost surely, 2^2089688449 is an apocalyptic number.

It is an amenable number.

2089688449 is a deficient number, since it is larger than the sum of its proper divisors (1).

2089688449 is an equidigital number, since it uses as much as digits as its factorization.

2089688449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7962624, while the sum is 58.

The square root of 2089688449 is about 45713.1102529679. The cubic root of 2089688449 is about 1278.4797317395.

The spelling of 2089688449 in words is "two billion, eighty-nine million, six hundred eighty-eight thousand, four hundred forty-nine".