489237449 has 2 divisors, whose sum is σ = 489237450. Its totient is φ = 489237448.

The previous prime is 489237431. The next prime is 489237451. The reversal of 489237449 is 944732984.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299982400 + 189255049 = 17320^2 + 13757^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489237449 is a prime.

Together with 489237451, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 489237397 and 489237406.

It is not a weakly prime, because it can be changed into another prime (489237649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 244618724 + 244618725.

It is an arithmetic number, because the mean of its divisors is an integer number (244618725).

Almost surely, 2^489237449 is an apocalyptic number.

It is an amenable number.

489237449 is a deficient number, since it is larger than the sum of its proper divisors (1).

489237449 is an equidigital number, since it uses as much as digits as its factorization.

489237449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 50.

The square root of 489237449 is about 22118.7126433705. The cubic root of 489237449 is about 787.9643413867.

The spelling of 489237449 in words is "four hundred eighty-nine million, two hundred thirty-seven thousand, four hundred forty-nine".