423489 has 16 divisors (see below), whose sum is σ = 633024. Its totient is φ = 249600.

The previous prime is 423481. The next prime is 423497. The reversal of 423489 is 984324.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (423481) and next prime (423497).

It is not a de Polignac number, because 423489 - 2³ = 423481 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423489.

It is not an unprimeable number, because it can be changed into a prime (423481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197 + ... + 1509.

It is an arithmetic number, because the mean of its divisors is an integer number (39564).

2⁴²³⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

423489 is a deficient number, since it is larger than the sum of its proper divisors (209535).

423489 is a wasteful number, since it uses less digits than its factorization.

423489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368.

The product of its digits is 6912, while the sum is 30.

The square root of 423489 is about 650.7603245435. The cubic root of 423489 is about 75.0955227316.

The spelling of 423489 in words is "four hundred twenty-three thousand, four hundred eighty-nine".