447791580 has 72 divisors (see below), whose sum is σ = 1371805344. Its totient is φ = 118224000.

The previous prime is 447791567. The next prime is 447791599. The reversal of 447791580 is 85197744.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5865 + ... + 30495.

It is an arithmetic number, because the mean of its divisors is an integer number (19052852).

Almost surely, 2^447791580 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 447791580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (685902672).

447791580 is an abundant number, since it is smaller than the sum of its proper divisors (924013764).

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

447791580 is a wasteful number, since it uses less digits than its factorization.

447791580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24747 (or 24742 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The square root of 447791580 is about 21161.0864560400. The cubic root of 447791580 is about 765.0537960375.

The spelling of 447791580 in words is "four hundred forty-seven million, seven hundred ninety-one thousand, five hundred eighty".