447808743 has 20 divisors (see below), whose sum is σ = 687033160. Its totient is φ = 290468592.

The previous prime is 447808727. The next prime is 447808763. The reversal of 447808743 is 347808744.

It is not a de Polignac number, because 447808743 - 2⁴ = 447808727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447808723) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 71713 + ... + 77706.

It is an arithmetic number, because the mean of its divisors is an integer number (34351658).

Almost surely, 2^447808743 is an apocalyptic number.

447808743 is a deficient number, since it is larger than the sum of its proper divisors (239224417).

447808743 is a wasteful number, since it uses less digits than its factorization.

447808743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149468 (or 149459 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The square root of 447808743 is about 21161.4919842624. The cubic root of 447808743 is about 765.0635702651.

Subtracting from 447808743 its reverse (347808744), we obtain a palindrome (99999999).

The spelling of 447808743 in words is "four hundred forty-seven million, eight hundred eight thousand, seven hundred forty-three".