428606189 has 4 divisors (see below), whose sum is σ = 467570400. Its totient is φ = 389641980.

The previous prime is 428606183. The next prime is 428606231. The reversal of 428606189 is 981606824.

It is a happy number.

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 428606189 - 2¹⁶ = 428540653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428606183) 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, 19482089 + ... + 19482110.

It is an arithmetic number, because the mean of its divisors is an integer number (116892600).

Almost surely, 2^428606189 is an apocalyptic number.

It is an amenable number.

428606189 is a deficient number, since it is larger than the sum of its proper divisors (38964211).

428606189 is a wasteful number, since it uses less digits than its factorization.

428606189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38964210.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 428606189 is about 20702.8063073584. The cubic root of 428606189 is about 753.9678242173.

The spelling of 428606189 in words is "four hundred twenty-eight million, six hundred six thousand, one hundred eighty-nine".