423885 has 32 divisors (see below), whose sum is σ = 847872. Its totient is φ = 175680.

The previous prime is 423883. The next prime is 423887. The reversal of 423885 is 588324.

It is an interprime number because it is at equal distance from previous prime (423883) and next prime (423887).

It is not a de Polignac number, because 423885 - 2¹ = 423883 is a prime.

423885 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 972 + ... + 1338.

It is an arithmetic number, because the mean of its divisors is an integer number (26496).

2⁴²³⁸⁸⁵ is an apocalyptic number.

It is an amenable number.

423885 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

423885 is a wasteful number, since it uses less digits than its factorization.

423885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393.

The product of its digits is 7680, while the sum is 30.

The square root of 423885 is about 651.0645129325. The cubic root of 423885 is about 75.1189224441.

The spelling of 423885 in words is "four hundred twenty-three thousand, eight hundred eighty-five".