449398280 has 64 divisors (see below), whose sum is σ = 1038312000. Its totient is φ = 174991104.

The previous prime is 449398267. The next prime is 449398307. The reversal of 449398280 is 82893944.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256367 + ... + 258113.

It is an arithmetic number, because the mean of its divisors is an integer number (16223625).

Almost surely, 2^449398280 is an apocalyptic number.

449398280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 449398280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519156000).

449398280 is an abundant number, since it is smaller than the sum of its proper divisors (588913720).

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

449398280 is a wasteful number, since it uses less digits than its factorization.

449398280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926 (or 1922 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 449398280 is about 21199.0160149003. The cubic root of 449398280 is about 765.9677217366.

The spelling of 449398280 in words is "four hundred forty-nine million, three hundred ninety-eight thousand, two hundred eighty".