427885 has 4 divisors (see below), whose sum is σ = 513468. Its totient is φ = 342304.

The previous prime is 427883. The next prime is 427913. The reversal of 427885 is 588724.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 281961 = 382^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 427885 - 2¹ = 427883 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42784 + ... + 42793.

It is an arithmetic number, because the mean of its divisors is an integer number (128367).

2⁴²⁷⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

427885 is a deficient number, since it is larger than the sum of its proper divisors (85583).

427885 is an equidigital number, since it uses as much as digits as its factorization.

427885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85582.

The product of its digits is 17920, while the sum is 34.

The square root of 427885 is about 654.1291921326. The cubic root of 427885 is about 75.3544701873.

Subtracting from 427885 its product of digits (17920), we obtain a triangular number (409965 = T₉₀₅).

It can be divided in two parts, 4 and 27885, that added together give a square (27889 = 167²).

The spelling of 427885 in words is "four hundred twenty-seven thousand, eight hundred eighty-five".