449018749 has 2 divisors, whose sum is σ = 449018750. Its totient is φ = 449018748.

The previous prime is 449018741. The next prime is 449018753. The reversal of 449018749 is 947810944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 445843225 + 3175524 = 21115^2 + 1782^2 .

It is a cyclic number.

It is not a de Polignac number, because 449018749 - 2³ = 449018741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 449018699 and 449018708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449018741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224509374 + 224509375.

It is an arithmetic number, because the mean of its divisors is an integer number (224509375).

Almost surely, 2^449018749 is an apocalyptic number.

It is an amenable number.

449018749 is a deficient number, since it is larger than the sum of its proper divisors (1).

449018749 is an equidigital number, since it uses as much as digits as its factorization.

449018749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 449018749 is about 21190.0625058068. The cubic root of 449018749 is about 765.7520330522.

The spelling of 449018749 in words is "four hundred forty-nine million, eighteen thousand, seven hundred forty-nine".