423844 has 24 divisors (see below), whose sum is σ = 822528. Its totient is φ = 190080.

The previous prime is 423823. The next prime is 423847. The reversal of 423844 is 448324.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423847) 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 7 ways as a sum of consecutive naturals, for example, 1429 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (34272).

2⁴²³⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

423844 is a deficient number, since it is larger than the sum of its proper divisors (398684).

423844 is a wasteful number, since it uses less digits than its factorization.

423844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 313 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 423844 is about 651.0330252760. The cubic root of 423844 is about 75.1165004231.

The spelling of 423844 in words is "four hundred twenty-three thousand, eight hundred forty-four".