428099 has 8 divisors (see below), whose sum is σ = 510720. Its totient is φ = 350856.

The previous prime is 428093. The next prime is 428137. The reversal of 428099 is 990824.

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 428099 - 2⁴ = 428083 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428099.

It is not an unprimeable number, because it can be changed into a prime (428093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1169 + ... + 1490.

It is an arithmetic number, because the mean of its divisors is an integer number (63840).

2⁴²⁸⁰⁹⁹ is an apocalyptic number.

428099 is a deficient number, since it is larger than the sum of its proper divisors (82621).

428099 is a wasteful number, since it uses less digits than its factorization.

428099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 428099 is about 654.2927479347. The cubic root of 428099 is about 75.3670305474.

The spelling of 428099 in words is "four hundred twenty-eight thousand, ninety-nine".