448947749 has 2 divisors, whose sum is σ = 448947750. Its totient is φ = 448947748.

The previous prime is 448947743. The next prime is 448947841. The reversal of 448947749 is 947749844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321664225 + 127283524 = 17935^2 + 11282^2 .

It is a cyclic number.

It is not a de Polignac number, because 448947749 - 2¹² = 448943653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 448947694 and 448947703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (448947743) 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, 224473874 + 224473875.

It is an arithmetic number, because the mean of its divisors is an integer number (224473875).

Almost surely, 2^448947749 is an apocalyptic number.

It is an amenable number.

448947749 is a deficient number, since it is larger than the sum of its proper divisors (1).

448947749 is an equidigital number, since it uses as much as digits as its factorization.

448947749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 56.

The square root of 448947749 is about 21188.3871259707. The cubic root of 448947749 is about 765.7116700307.

The spelling of 448947749 in words is "four hundred forty-eight million, nine hundred forty-seven thousand, seven hundred forty-nine".