447540 has 24 divisors (see below), whose sum is σ = 1253280. Its totient is φ = 119328.

The previous prime is 447527. The next prime is 447541. The reversal of 447540 is 45744.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 447540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (447541) by changing a digit.

447540 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3670 + ... + 3789.

It is an arithmetic number, because the mean of its divisors is an integer number (52220).

2⁴⁴⁷⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

447540 is an abundant number, since it is smaller than the sum of its proper divisors (805740).

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

447540 is a wasteful number, since it uses less digits than its factorization.

447540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7471 (or 7469 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 447540 is about 668.9843047486. The cubic root of 447540 is about 76.4910494035.

The spelling of 447540 in words is "four hundred forty-seven thousand, five hundred forty".