449686315917 has 6 divisors (see below), whose sum is σ = 649546900782. Its totient is φ = 299790877272.

The previous prime is 449686315907. The next prime is 449686315933. The reversal of 449686315917 is 719513686944.

449686315917 is a `hidden beast` number, since 4 + 4 + 9 + 6 + 8 + 6 + 31 + 591 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 407853385956 + 41832929961 = 638634^2 + 204531^2 .

It is not a de Polignac number, because 449686315917 - 2⁴ = 449686315901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449686315907) 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 in 5 ways as a sum of consecutive naturals, for example, 24982573098 + ... + 24982573115.

It is an arithmetic number, because the mean of its divisors is an integer number (108257816797).

Almost surely, 2^449686315917 is an apocalyptic number.

It is an amenable number.

449686315917 is a deficient number, since it is larger than the sum of its proper divisors (199860584865).

449686315917 is a wasteful number, since it uses less digits than its factorization.

449686315917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49965146219 (or 49965146216 counting only the distinct ones).

The product of its digits is 39191040, while the sum is 63.

The spelling of 449686315917 in words is "four hundred forty-nine billion, six hundred eighty-six million, three hundred fifteen thousand, nine hundred seventeen".