423189 has 12 divisors (see below), whose sum is σ = 658476. Its totient is φ = 260352.

The previous prime is 423179. The next prime is 423191. The reversal of 423189 is 981324.

It can be written as a sum of positive squares in 2 ways, for example, as 22500 + 400689 = 150^2 + 633^2 .

It is not a de Polignac number, because 423189 - 2⁴ = 423173 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 423189.

It is not an unprimeable number, because it can be changed into a prime (423109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1692 + ... + 1925.

It is an arithmetic number, because the mean of its divisors is an integer number (54873).

2⁴²³¹⁸⁹ is an apocalyptic number.

It is an amenable number.

423189 is a deficient number, since it is larger than the sum of its proper divisors (235287).

423189 is a wasteful number, since it uses less digits than its factorization.

423189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3636 (or 3633 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 423189 is about 650.5297840991. The cubic root of 423189 is about 75.0777859634.

The spelling of 423189 in words is "four hundred twenty-three thousand, one hundred eighty-nine".