428199 has 4 divisors (see below), whose sum is σ = 570936. Its totient is φ = 285464.

The previous prime is 428177. The next prime is 428221. The reversal of 428199 is 991824.

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

It is an interprime number because it is at equal distance from previous prime (428177) and next prime (428221).

It is a cyclic number.

It is not a de Polignac number, because 428199 - 2⁵ = 428167 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428149) 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, 71364 + ... + 71369.

It is an arithmetic number, because the mean of its divisors is an integer number (142734).

2⁴²⁸¹⁹⁹ is an apocalyptic number.

428199 is a deficient number, since it is larger than the sum of its proper divisors (142737).

428199 is a wasteful number, since it uses less digits than its factorization.

428199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142736.

The product of its digits is 5184, while the sum is 33.

The square root of 428199 is about 654.3691618651. The cubic root of 428199 is about 75.3728984395.

It can be divided in two parts, 4 and 28199, that added together give a triangular number (28203 = T₂₃₇).

The spelling of 428199 in words is "four hundred twenty-eight thousand, one hundred ninety-nine".