449825831909 has 2 divisors, whose sum is σ = 449825831910. Its totient is φ = 449825831908.

The previous prime is 449825831879. The next prime is 449825831911. The reversal of 449825831909 is 909138528944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 417804518884 + 32021313025 = 646378^2 + 178945^2 .

It is a cyclic number.

It is not a de Polignac number, because 449825831909 - 2²⁰ = 449824783333 is a prime.

Together with 449825831911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449825831989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224912915954 + 224912915955.

It is an arithmetic number, because the mean of its divisors is an integer number (224912915955).

Almost surely, 2^449825831909 is an apocalyptic number.

It is an amenable number.

449825831909 is a deficient number, since it is larger than the sum of its proper divisors (1).

449825831909 is an equidigital number, since it uses as much as digits as its factorization.

449825831909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22394880, while the sum is 62.

The spelling of 449825831909 in words is "four hundred forty-nine billion, eight hundred twenty-five million, eight hundred thirty-one thousand, nine hundred nine".