428859 has 12 divisors (see below), whose sum is σ = 656136. Its totient is φ = 268992.

The previous prime is 428851. The next prime is 428863. The reversal of 428859 is 958824.

It is not a de Polignac number, because 428859 - 2³ = 428851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428851) 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 11 ways as a sum of consecutive naturals, for example, 1249 + ... + 1554.

It is an arithmetic number, because the mean of its divisors is an integer number (54678).

2⁴²⁸⁸⁵⁹ is an apocalyptic number.

428859 is a deficient number, since it is larger than the sum of its proper divisors (227277).

428859 is a wasteful number, since it uses less digits than its factorization.

428859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826 (or 2823 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 428859 is about 654.8732701829. The cubic root of 428859 is about 75.4116036337.

The spelling of 428859 in words is "four hundred twenty-eight thousand, eight hundred fifty-nine".