447804840 has 128 divisors (see below), whose sum is σ = 1541928960. Its totient is φ = 101915904.

The previous prime is 447804839. The next prime is 447804859. The reversal of 447804840 is 48408744.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 219907 + ... + 221933.

It is an arithmetic number, because the mean of its divisors is an integer number (12046320).

Almost surely, 2^447804840 is an apocalyptic number.

447804840 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 447804840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770964480).

447804840 is an abundant number, since it is smaller than the sum of its proper divisors (1094124120).

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

447804840 is a wasteful number, since it uses less digits than its factorization.

447804840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311 (or 2307 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 39.

The square root of 447804840 is about 21161.3997646659. The cubic root of 447804840 is about 765.0613475515.

The spelling of 447804840 in words is "four hundred forty-seven million, eight hundred four thousand, eight hundred forty".