6428089 has 4 divisors (see below), whose sum is σ = 6436224. Its totient is φ = 6419956.

The previous prime is 6428087. The next prime is 6428117. The reversal of 6428089 is 9808246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6428089 - 2¹ = 6428087 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6428083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737 + ... + 4510.

It is an arithmetic number, because the mean of its divisors is an integer number (1609056).

Almost surely, 2^6428089 is an apocalyptic number.

It is an amenable number.

6428089 is a deficient number, since it is larger than the sum of its proper divisors (8135).

6428089 is an equidigital number, since it uses as much as digits as its factorization.

6428089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8134.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 6428089 is about 2535.3676262033. The cubic root of 6428089 is about 185.9347769156.

The spelling of 6428089 in words is "six million, four hundred twenty-eight thousand, eighty-nine".