428599 has 4 divisors (see below), whose sum is σ = 435064. Its totient is φ = 422136.

The previous prime is 428579. The next prime is 428629. The reversal of 428599 is 995824.

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 428599 - 2⁵ = 428567 is a prime.

It is a Duffinian number.

428599 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428509) 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, 3132 + ... + 3265.

It is an arithmetic number, because the mean of its divisors is an integer number (108766).

2⁴²⁸⁵⁹⁹ is an apocalyptic number.

428599 is a deficient number, since it is larger than the sum of its proper divisors (6465).

428599 is an equidigital number, since it uses as much as digits as its factorization.

428599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464.

The product of its digits is 25920, while the sum is 37.

The square root of 428599 is about 654.6747283957. The cubic root of 428599 is about 75.3963608766.

The spelling of 428599 in words is "four hundred twenty-eight thousand, five hundred ninety-nine".