449005797721 has 8 divisors (see below), whose sum is σ = 499142921984. Its totient is φ = 401096990160.

The previous prime is 449005797719. The next prime is 449005797727. The reversal of 449005797721 is 127797500944.

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

It is a cyclic number.

It is not a de Polignac number, because 449005797721 - 2¹ = 449005797719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449005797727) 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 in 7 ways as a sum of consecutive naturals, for example, 557078751 + ... + 557079556.

It is an arithmetic number, because the mean of its divisors is an integer number (62392865248).

Almost surely, 2^449005797721 is an apocalyptic number.

It is an amenable number.

449005797721 is a deficient number, since it is larger than the sum of its proper divisors (50137124263).

449005797721 is a wasteful number, since it uses less digits than its factorization.

449005797721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114158351.

The product of its (nonzero) digits is 4445280, while the sum is 55.

The spelling of 449005797721 in words is "four hundred forty-nine billion, five million, seven hundred ninety-seven thousand, seven hundred twenty-one".