423009 has 8 divisors (see below), whose sum is σ = 626720. Its totient is φ = 281988.

The previous prime is 423001. The next prime is 423013. The reversal of 423009 is 900324.

It is not a de Polignac number, because 423009 - 2³ = 423001 is a prime.

It is a super-2 number, since 2×423009² = 357873228162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 422982 and 423000.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423009.

It is not an unprimeable number, because it can be changed into a prime (423001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7807 + ... + 7860.

It is an arithmetic number, because the mean of its divisors is an integer number (78340).

2⁴²³⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

423009 is a deficient number, since it is larger than the sum of its proper divisors (203711).

423009 is a wasteful number, since it uses less digits than its factorization.

423009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15676 (or 15670 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 423009 is about 650.3914206076. The cubic root of 423009 is about 75.0671398786.

The spelling of 423009 in words is "four hundred twenty-three thousand, nine".