6442789 has 4 divisors (see below), whose sum is σ = 6489280. Its totient is φ = 6396300.

The previous prime is 6442771. The next prime is 6442801. The reversal of 6442789 is 9872446.

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 6442789 - 2⁷ = 6442661 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 (6440789) 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, 23037 + ... + 23314.

It is an arithmetic number, because the mean of its divisors is an integer number (1622320).

Almost surely, 2^6442789 is an apocalyptic number.

It is an amenable number.

6442789 is a deficient number, since it is larger than the sum of its proper divisors (46491).

6442789 is a wasteful number, since it uses less digits than its factorization.

6442789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46490.

The product of its digits is 96768, while the sum is 40.

The square root of 6442789 is about 2538.2649585888. The cubic root of 6442789 is about 186.0764032668.

It can be divided in two parts, 64427 and 89, that added together give a square (64516 = 254²).

The spelling of 6442789 in words is "six million, four hundred forty-two thousand, seven hundred eighty-nine".