449397206917 has 2 divisors, whose sum is σ = 449397206918. Its totient is φ = 449397206916.

The previous prime is 449397206831. The next prime is 449397206927. The reversal of 449397206917 is 719602793944.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403338037921 + 46059168996 = 635089^2 + 214614^2 .

It is a cyclic number.

It is not a de Polignac number, because 449397206917 - 2²³ = 449388818309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (449397206927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 224698603458 + 224698603459.

It is an arithmetic number, because the mean of its divisors is an integer number (224698603459).

Almost surely, 2^449397206917 is an apocalyptic number.

It is an amenable number.

449397206917 is a deficient number, since it is larger than the sum of its proper divisors (1).

449397206917 is an equidigital number, since it uses as much as digits as its factorization.

449397206917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 449397206917 in words is "four hundred forty-nine billion, three hundred ninety-seven million, two hundred six thousand, nine hundred seventeen".