449223920 has 80 divisors (see below), whose sum is σ = 1086492960. Its totient is φ = 172526592.

The previous prime is 449223913. The next prime is 449223961. The reversal of 449223920 is 29322944.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 526214 + ... + 527066.

It is an arithmetic number, because the mean of its divisors is an integer number (13581162).

Almost surely, 2^449223920 is an apocalyptic number.

449223920 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 449223920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (543246480).

449223920 is an abundant number, since it is smaller than the sum of its proper divisors (637269040).

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

449223920 is a wasteful number, since it uses less digits than its factorization.

449223920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122 (or 1116 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 449223920 is about 21194.9031609017. The cubic root of 449223920 is about 765.8686474751.

The spelling of 449223920 in words is "four hundred forty-nine million, two hundred twenty-three thousand, nine hundred twenty".