447471340 has 72 divisors (see below), whose sum is σ = 985687920. Its totient is φ = 170581248.

The previous prime is 447471319. The next prime is 447471341. The reversal of 447471340 is 43174744.

It is a junction number, because it is equal to n+sod(n) for n = 447471296 and 447471305.

It is not an unprimeable number, because it can be changed into a prime (447471341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1615282 + ... + 1615558.

It is an arithmetic number, because the mean of its divisors is an integer number (13690110).

Almost surely, 2^447471340 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 447471340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492843960).

447471340 is an abundant number, since it is smaller than the sum of its proper divisors (538216580).

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

447471340 is a wasteful number, since it uses less digits than its factorization.

447471340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 34.

The square root of 447471340 is about 21153.5183834747. The cubic root of 447471340 is about 764.8713754157.

The spelling of 447471340 in words is "four hundred forty-seven million, four hundred seventy-one thousand, three hundred forty".