424189 has 4 divisors (see below), whose sum is σ = 442656. Its totient is φ = 405724.

The previous prime is 424187. The next prime is 424199. The reversal of 424189 is 981424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 424189 - 2¹ = 424187 is a prime.

It is a Duffinian number.

424189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (424187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9199 + ... + 9244.

It is an arithmetic number, because the mean of its divisors is an integer number (110664).

2⁴²⁴¹⁸⁹ is an apocalyptic number.

It is an amenable number.

424189 is a deficient number, since it is larger than the sum of its proper divisors (18467).

424189 is a wasteful number, since it uses less digits than its factorization.

424189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18466.

The product of its digits is 2304, while the sum is 28.

The square root of 424189 is about 651.2979348962. The cubic root of 424189 is about 75.1368759735.

The spelling of 424189 in words is "four hundred twenty-four thousand, one hundred eighty-nine".