6428264789 has 4 divisors (see below), whose sum is σ = 6433850880. Its totient is φ = 6422678700.

The previous prime is 6428264771. The next prime is 6428264803. The reversal of 6428264789 is 9874628246.

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 a de Polignac number, because none of the positive numbers 2^k-6428264789 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 (6428264389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2791319 + ... + 2793620.

It is an arithmetic number, because the mean of its divisors is an integer number (1608462720).

Almost surely, 2^6428264789 is an apocalyptic number.

It is an amenable number.

6428264789 is a deficient number, since it is larger than the sum of its proper divisors (5586091).

6428264789 is a wasteful number, since it uses less digits than its factorization.

6428264789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5586090.

The product of its digits is 9289728, while the sum is 56.

The square root of 6428264789 is about 80176.4603172278. The cubic root of 6428264789 is about 1859.3647182009.

The spelling of 6428264789 in words is "six billion, four hundred twenty-eight million, two hundred sixty-four thousand, seven hundred eighty-nine".