449273856 has 112 divisors (see below), whose sum is σ = 1216536048. Its totient is φ = 147456000.

The previous prime is 449273831. The next prime is 449273857. The reversal of 449273856 is 658372944.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (449273857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2482086 + ... + 2482266.

It is an arithmetic number, because the mean of its divisors is an integer number (10861929).

Almost surely, 2^449273856 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 449273856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (608268024).

449273856 is an abundant number, since it is smaller than the sum of its proper divisors (767262192).

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

449273856 is a wasteful number, since it uses less digits than its factorization.

449273856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 287 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 48.

The square root of 449273856 is about 21196.0811472310. The cubic root of 449273856 is about 765.8970245629.

The spelling of 449273856 in words is "four hundred forty-nine million, two hundred seventy-three thousand, eight hundred fifty-six".