9993986216 has 16 divisors (see below), whose sum is σ = 18835818900. Its totient is φ = 4971101184.

The previous prime is 9993986209. The next prime is 9993986227. The reversal of 9993986216 is 6126893999.

It can be written as a sum of positive squares in 2 ways, for example, as 9534741316 + 459244900 = 97646^2 + 21430^2 .

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

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, 3234851 + ... + 3237938.

Almost surely, 2^9993986216 is an apocalyptic number.

It is an amenable number.

9993986216 is a deficient number, since it is larger than the sum of its proper divisors (8841832684).

9993986216 is a wasteful number, since it uses less digits than its factorization.

9993986216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6472988 (or 6472984 counting only the distinct ones).

The product of its digits is 11337408, while the sum is 62.

The square root of 9993986216 is about 99969.9265579404. The cubic root of 9993986216 is about 2154.0027266002.

The spelling of 9993986216 in words is "nine billion, nine hundred ninety-three million, nine hundred eighty-six thousand, two hundred sixteen".