449786257 has 2 divisors, whose sum is σ = 449786258. Its totient is φ = 449786256.

The previous prime is 449786251. The next prime is 449786291. The reversal of 449786257 is 752687944.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342953361 + 106832896 = 18519^2 + 10336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-449786257 is a prime.

It is not a weakly prime, because it can be changed into another prime (449786251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224893128 + 224893129.

It is an arithmetic number, because the mean of its divisors is an integer number (224893129).

Almost surely, 2^449786257 is an apocalyptic number.

It is an amenable number.

449786257 is a deficient number, since it is larger than the sum of its proper divisors (1).

449786257 is an equidigital number, since it uses as much as digits as its factorization.

449786257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3386880, while the sum is 52.

The square root of 449786257 is about 21208.1648663905. The cubic root of 449786257 is about 766.1880848254.

The spelling of 449786257 in words is "four hundred forty-nine million, seven hundred eighty-six thousand, two hundred fifty-seven".