426789 has 20 divisors (see below), whose sum is σ = 696960. Its totient is φ = 258120.

The previous prime is 426787. The next prime is 426799. The reversal of 426789 is 987624.

It is not a de Polignac number, because 426789 - 2¹ = 426787 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 426789.

It is not an unprimeable number, because it can be changed into a prime (426787) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 652 + ... + 1130.

It is an arithmetic number, because the mean of its divisors is an integer number (34848).

2⁴²⁶⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

426789 is a deficient number, since it is larger than the sum of its proper divisors (270171).

426789 is a wasteful number, since it uses less digits than its factorization.

426789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 493 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 426789 is about 653.2908999825. The cubic root of 426789 is about 75.2900766276.

It can be divided in two parts, 4267 and 89, that added together give a square (4356 = 66²).

The spelling of 426789 in words is "four hundred twenty-six thousand, seven hundred eighty-nine".