449814721 has 4 divisors (see below), whose sum is σ = 473489200. Its totient is φ = 426140244.

The previous prime is 449814719. The next prime is 449814773. The reversal of 449814721 is 127418944.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 449814721 - 2¹ = 449814719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (449814791) 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, 11837211 + ... + 11837248.

It is an arithmetic number, because the mean of its divisors is an integer number (118372300).

Almost surely, 2^449814721 is an apocalyptic number.

It is an amenable number.

449814721 is a deficient number, since it is larger than the sum of its proper divisors (23674479).

449814721 is a wasteful number, since it uses less digits than its factorization.

449814721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23674478.

The product of its digits is 64512, while the sum is 40.

The square root of 449814721 is about 21208.8359180790. The cubic root of 449814721 is about 766.2042468115.

The spelling of 449814721 in words is "four hundred forty-nine million, eight hundred fourteen thousand, seven hundred twenty-one".