449896076721 has 48 divisors (see below), whose sum is σ = 802641863296. Its totient is φ = 236469155328.

The previous prime is 449896076719. The next prime is 449896076743. The reversal of 449896076721 is 127670698944.

449896076721 is a `hidden beast` number, since 4 + 498 + 9 + 6 + 0 + 76 + 72 + 1 = 666.

It is not a de Polignac number, because 449896076721 - 2¹ = 449896076719 is a prime.

It is a super-2 number, since 2×449896076721² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (449896076521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 738760 + ... + 1202313.

Almost surely, 2^449896076721 is an apocalyptic number.

It is an amenable number.

449896076721 is a deficient number, since it is larger than the sum of its proper divisors (352745786575).

449896076721 is a wasteful number, since it uses less digits than its factorization.

449896076721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941382 (or 1941379 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 449896076721 in words is "four hundred forty-nine billion, eight hundred ninety-six million, seventy-six thousand, seven hundred twenty-one".