428516659 has 4 divisors (see below), whose sum is σ = 428866560. Its totient is φ = 428166760.

The previous prime is 428516651. The next prime is 428516663. The reversal of 428516659 is 956615824.

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

It is a cyclic number.

It is not a de Polignac number, because 428516659 - 2³ = 428516651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428516651) 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, 173107 + ... + 175564.

It is an arithmetic number, because the mean of its divisors is an integer number (107216640).

Almost surely, 2^428516659 is an apocalyptic number.

428516659 is a deficient number, since it is larger than the sum of its proper divisors (349901).

428516659 is a wasteful number, since it uses less digits than its factorization.

428516659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349900.

The product of its digits is 518400, while the sum is 46.

The square root of 428516659 is about 20700.6439271826. The cubic root of 428516659 is about 753.9153226890.

The spelling of 428516659 in words is "four hundred twenty-eight million, five hundred sixteen thousand, six hundred fifty-nine".