449271816 has 64 divisors (see below), whose sum is σ = 1285939200. Its totient is φ = 128132928.

The previous prime is 449271791. The next prime is 449271829. The reversal of 449271816 is 618172944.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105945 + ... + 110103.

It is an arithmetic number, because the mean of its divisors is an integer number (20092800).

Almost surely, 2^449271816 is an apocalyptic number.

It is an amenable number.

449271816 is an abundant number, since it is smaller than the sum of its proper divisors (836667384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

449271816 is a wasteful number, since it uses less digits than its factorization.

449271816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4818 (or 4814 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 449271816 is about 21196.0330250733. The cubic root of 449271816 is about 765.8958653350.

The spelling of 449271816 in words is "four hundred forty-nine million, two hundred seventy-one thousand, eight hundred sixteen".