428744859 has 8 divisors (see below), whose sum is σ = 580192320. Its totient is φ = 281563656.

The previous prime is 428744839. The next prime is 428744867. The reversal of 428744859 is 958447824.

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

It is not a de Polignac number, because 428744859 - 2⁹ = 428744347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428744809) 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 7 ways as a sum of consecutive naturals, for example, 1066329 + ... + 1066730.

It is an arithmetic number, because the mean of its divisors is an integer number (72524040).

Almost surely, 2^428744859 is an apocalyptic number.

428744859 is a deficient number, since it is larger than the sum of its proper divisors (151447461).

428744859 is a wasteful number, since it uses less digits than its factorization.

428744859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133129.

The product of its digits is 2580480, while the sum is 51.

The square root of 428744859 is about 20706.1550993901. The cubic root of 428744859 is about 754.0491276355.

The spelling of 428744859 in words is "four hundred twenty-eight million, seven hundred forty-four thousand, eight hundred fifty-nine".