447807289540 has 96 divisors (see below), whose sum is σ = 1040098993920. Its totient is φ = 160931904000.

The previous prime is 447807289507. The next prime is 447807289549. The reversal of 447807289540 is 45982708744.

It is a super-2 number, since 2×447807289540² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (447807289549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1404825 + ... + 1693855.

It is an arithmetic number, because the mean of its divisors is an integer number (10834364520).

Almost surely, 2^447807289540 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 447807289540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520049496960).

447807289540 is an abundant number, since it is smaller than the sum of its proper divisors (592291704380).

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

447807289540 is a wasteful number, since it uses less digits than its factorization.

447807289540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289213 (or 289211 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 58.

The spelling of 447807289540 in words is "four hundred forty-seven billion, eight hundred seven million, two hundred eighty-nine thousand, five hundred forty".