449497710866 has 8 divisors (see below), whose sum is σ = 674717084604. Its totient is φ = 224592016000.

The previous prime is 449497710863. The next prime is 449497710887. The reversal of 449497710866 is 668017794944.

It can be written as a sum of positive squares in 2 ways, for example, as 424740261841 + 24757449025 = 651721^2 + 157345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (449497710863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78416135 + ... + 78421866.

Almost surely, 2^449497710866 is an apocalyptic number.

449497710866 is a deficient number, since it is larger than the sum of its proper divisors (225219373738).

449497710866 is a wasteful number, since it uses less digits than its factorization.

449497710866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156839436.

The product of its (nonzero) digits is 73156608, while the sum is 65.

The spelling of 449497710866 in words is "four hundred forty-nine billion, four hundred ninety-seven million, seven hundred ten thousand, eight hundred sixty-six".