447143285 has 8 divisors (see below), whose sum is σ = 536690616. Its totient is φ = 357635520.

The previous prime is 447143273. The next prime is 447143293. The reversal of 447143285 is 582341744.

It can be written as a sum of positive squares in 4 ways, for example, as 53597041 + 393546244 = 7321^2 + 19838^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 447143285 - 2⁴ = 447143269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28595 + ... + 41375.

It is an arithmetic number, because the mean of its divisors is an integer number (67086327).

Almost surely, 2^447143285 is an apocalyptic number.

It is an amenable number.

447143285 is a deficient number, since it is larger than the sum of its proper divisors (89547331).

447143285 is a wasteful number, since it uses less digits than its factorization.

447143285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19783.

The product of its digits is 107520, while the sum is 38.

The square root of 447143285 is about 21145.7628143323. The cubic root of 447143285 is about 764.6844128100.

The spelling of 447143285 in words is "four hundred forty-seven million, one hundred forty-three thousand, two hundred eighty-five".