427984 has 20 divisors (see below), whose sum is σ = 866016. Its totient is φ = 204512.

The previous prime is 427969. The next prime is 427991. The reversal of 427984 is 489724.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

427984 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 3 ways as a sum of consecutive naturals, for example, 214 + ... + 949.

2⁴²⁷⁹⁸⁴ is an apocalyptic number.

It is an amenable number.

427984 is an abundant number, since it is smaller than the sum of its proper divisors (438032).

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

427984 is a wasteful number, since it uses less digits than its factorization.

427984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194 (or 1188 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 427984 is about 654.2048608807. The cubic root of 427984 is about 75.3602813416.

The spelling of 427984 in words is "four hundred twenty-seven thousand, nine hundred eighty-four".