423944 has 16 divisors (see below), whose sum is σ = 801900. Its totient is φ = 210112.

The previous prime is 423931. The next prime is 423949. The reversal of 423944 is 449324.

It can be written as a sum of positive squares in 2 ways, for example, as 422500 + 1444 = 650^2 + 38^2 .

It is not an unprimeable number, because it can be changed into a prime (423949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442 + ... + 1710.

2⁴²³⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

423944 is a deficient number, since it is larger than the sum of its proper divisors (377956).

423944 is a wasteful number, since it uses less digits than its factorization.

423944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 468 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

The square root of 423944 is about 651.1098217659. The cubic root of 423944 is about 75.1224075174.

The spelling of 423944 in words is "four hundred twenty-three thousand, nine hundred forty-four".