426823 has 4 divisors (see below), whose sum is σ = 430920. Its totient is φ = 422728.

The previous prime is 426799. The next prime is 426841. The reversal of 426823 is 328624.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 426823 - 2⁹ = 426311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1888 + ... + 2101.

It is an arithmetic number, because the mean of its divisors is an integer number (107730).

2⁴²⁶⁸²³ is an apocalyptic number.

426823 is a deficient number, since it is larger than the sum of its proper divisors (4097).

426823 is a wasteful number, since it uses less digits than its factorization.

426823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096.

The product of its digits is 2304, while the sum is 25.

The square root of 426823 is about 653.3169215626. The cubic root of 426823 is about 75.2920758939.

The spelling of 426823 in words is "four hundred twenty-six thousand, eight hundred twenty-three".