8221779050 has 12 divisors (see below), whose sum is σ = 15292509126. Its totient is φ = 3288711600.

The previous prime is 8221779029. The next prime is 8221779079. The reversal of 8221779050 is 509771228.

It can be written as a sum of positive squares in 3 ways, for example, as 7697781169 + 523997881 = 87737^2 + 22891^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8221778989 and 8221779007.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82217741 + ... + 82217840.

Almost surely, 2^8221779050 is an apocalyptic number.

8221779050 is a deficient number, since it is larger than the sum of its proper divisors (7070730076).

8221779050 is a wasteful number, since it uses less digits than its factorization.

8221779050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164435593 (or 164435588 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 41.

The square root of 8221779050 is about 90674.0263250728. The cubic root of 8221779050 is about 2018.3133856247.

The spelling of 8221779050 in words is "eight billion, two hundred twenty-one million, seven hundred seventy-nine thousand, fifty".