449657856 has 132 divisors (see below), whose sum is σ = 1314370512. Its totient is φ = 148045824.

The previous prime is 449657833. The next prime is 449657861. The reversal of 449657856 is 658756944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 893701 + ... + 894203.

Almost surely, 2^449657856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449657856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (657185256).

449657856 is an abundant number, since it is smaller than the sum of its proper divisors (864712656).

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

449657856 is a wasteful number, since it uses less digits than its factorization.

449657856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626 (or 605 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The square root of 449657856 is about 21205.1374907120. The cubic root of 449657856 is about 766.1151696887.

The spelling of 449657856 in words is "four hundred forty-nine million, six hundred fifty-seven thousand, eight hundred fifty-six".