427889 has 8 divisors (see below), whose sum is σ = 533568. Its totient is φ = 333360.

The previous prime is 427883. The next prime is 427913. The reversal of 427889 is 988724.

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

It is a cyclic number.

It is not a de Polignac number, because 427889 - 2¹⁶ = 362353 is a prime.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2702 + ... + 2855.

It is an arithmetic number, because the mean of its divisors is an integer number (66696).

2⁴²⁷⁸⁸⁹ is an apocalyptic number.

It is an amenable number.

427889 is a deficient number, since it is larger than the sum of its proper divisors (105679).

427889 is a wasteful number, since it uses less digits than its factorization.

427889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5575.

The product of its digits is 32256, while the sum is 38.

The square root of 427889 is about 654.1322496254. The cubic root of 427889 is about 75.3547049988.

It can be divided in two parts, 4 and 27889, that multiplied together give a square (111556 = 334²).

The spelling of 427889 in words is "four hundred twenty-seven thousand, eight hundred eighty-nine".