427839 has 8 divisors (see below), whose sum is σ = 604080. Its totient is φ = 268416.

The previous prime is 427813. The next prime is 427849. The reversal of 427839 is 938724.

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

It is not a de Polignac number, because 427839 - 2⁷ = 427711 is a prime.

427839 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427849) 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, 4144 + ... + 4245.

It is an arithmetic number, because the mean of its divisors is an integer number (75510).

2⁴²⁷⁸³⁹ is an apocalyptic number.

427839 is a deficient number, since it is larger than the sum of its proper divisors (176241).

427839 is a wasteful number, since it uses less digits than its factorization.

427839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8409.

The product of its digits is 12096, while the sum is 33.

The square root of 427839 is about 654.0940299376. The cubic root of 427839 is about 75.3517697500.

The spelling of 427839 in words is "four hundred twenty-seven thousand, eight hundred thirty-nine".