428697589 has 8 divisors (see below), whose sum is σ = 451520640. Its totient is φ = 405900576.

The previous prime is 428697587. The next prime is 428697593. The reversal of 428697589 is 985796824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428697589 - 2¹ = 428697587 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 (428697587) 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, 33729 + ... + 44665.

It is an arithmetic number, because the mean of its divisors is an integer number (56440080).

Almost surely, 2^428697589 is an apocalyptic number.

It is an amenable number.

428697589 is a deficient number, since it is larger than the sum of its proper divisors (22823051).

428697589 is a wasteful number, since it uses less digits than its factorization.

428697589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13019.

The product of its digits is 8709120, while the sum is 58.

The square root of 428697589 is about 20705.0136198941. The cubic root of 428697589 is about 754.0214147961.

The spelling of 428697589 in words is "four hundred twenty-eight million, six hundred ninety-seven thousand, five hundred eighty-nine".