428189599 has 4 divisors (see below), whose sum is σ = 437300064. Its totient is φ = 419079136.

The previous prime is 428189539. The next prime is 428189621. The reversal of 428189599 is 995981824.

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 428189599 - 2¹⁵ = 428156831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428189519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4555162 + ... + 4555255.

It is an arithmetic number, because the mean of its divisors is an integer number (109325016).

Almost surely, 2^428189599 is an apocalyptic number.

428189599 is a deficient number, since it is larger than the sum of its proper divisors (9110465).

428189599 is an equidigital number, since it uses as much as digits as its factorization.

428189599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9110464.

The product of its digits is 1866240, while the sum is 55.

The square root of 428189599 is about 20692.7426650021. The cubic root of 428189599 is about 753.7234683788.

The spelling of 428189599 in words is "four hundred twenty-eight million, one hundred eighty-nine thousand, five hundred ninety-nine".