428466589 has 4 divisors (see below), whose sum is σ = 453670524. Its totient is φ = 403262656.

The previous prime is 428466583. The next prime is 428466607. The reversal of 428466589 is 985664824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 211935364 + 216531225 = 14558^2 + 14715^2 .

It is a cyclic number.

It is not a de Polignac number, because 428466589 - 2³ = 428466581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428466581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12601942 + ... + 12601975.

It is an arithmetic number, because the mean of its divisors is an integer number (113417631).

Almost surely, 2^428466589 is an apocalyptic number.

It is an amenable number.

428466589 is a deficient number, since it is larger than the sum of its proper divisors (25203935).

428466589 is a wasteful number, since it uses less digits than its factorization.

428466589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25203934.

The product of its digits is 3317760, while the sum is 52.

The square root of 428466589 is about 20699.4345091841. The cubic root of 428466589 is about 753.8859578169.

The spelling of 428466589 in words is "four hundred twenty-eight million, four hundred sixty-six thousand, five hundred eighty-nine".