6444789622 has 8 divisors (see below), whose sum is σ = 9667879200. Its totient is φ = 3222163224.

The previous prime is 6444789613. The next prime is 6444789623. The reversal of 6444789622 is 2269874446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 6444789622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444789623) 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, 78622 + ... + 138097.

It is an arithmetic number, because the mean of its divisors is an integer number (1208484900).

Almost surely, 2^6444789622 is an apocalyptic number.

6444789622 is a deficient number, since it is larger than the sum of its proper divisors (3223089578).

6444789622 is a wasteful number, since it uses less digits than its factorization.

6444789622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231590.

The product of its digits is 4644864, while the sum is 52.

The square root of 6444789622 is about 80279.4470708412. The cubic root of 6444789622 is about 1860.9566149072.

The spelling of 6444789622 in words is "six billion, four hundred forty-four million, seven hundred eighty-nine thousand, six hundred twenty-two".