9986804356 has 27 divisors (see below), whose sum is σ = 18110851941. Its totient is φ = 4818417744.

The previous prime is 9986804291. The next prime is 9986804381. The reversal of 9986804356 is 6534086899.

The square root of 9986804356 is 99934.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5236837956 + 4749966400 = 72366^2 + 68920^2 .

It is a super-2 number, since 2×9986804356² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9986804356.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 5795311 + ... + 5797033.

Almost surely, 2^9986804356 is an apocalyptic number.

9986804356 is the 99934-th square number.

It is an amenable number.

9986804356 is a deficient number, since it is larger than the sum of its proper divisors (8124047585).

9986804356 is an equidigital number, since it uses as much as digits as its factorization.

9986804356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508 (or 1754 counting only the distinct ones).

The product of its (nonzero) digits is 11197440, while the sum is 58.

The cubic root of 9986804356 is about 2153.4866344630.

The spelling of 9986804356 in words is "nine billion, nine hundred eighty-six million, eight hundred four thousand, three hundred fifty-six".