8389221944 has 16 divisors (see below), whose sum is σ = 15732159000. Its totient is φ = 4193979552.

The previous prime is 8389221937. The next prime is 8389221979. The reversal of 8389221944 is 4491229838.

It is a super-2 number, since 2×8389221944² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8389221892 and 8389221901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19862 + ... + 131045.

Almost surely, 2^8389221944 is an apocalyptic number.

It is an amenable number.

8389221944 is a deficient number, since it is larger than the sum of its proper divisors (7342937056).

8389221944 is a wasteful number, since it uses less digits than its factorization.

8389221944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157862 (or 157858 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The square root of 8389221944 is about 91592.6959096630. The cubic root of 8389221944 is about 2031.9229147758.

The spelling of 8389221944 in words is "eight billion, three hundred eighty-nine million, two hundred twenty-one thousand, nine hundred forty-four".