9912036388 has 12 divisors (see below), whose sum is σ = 18366420492. Its totient is φ = 4664487680.

The previous prime is 9912036383. The next prime is 9912036391. The reversal of 9912036388 is 8836302199.

It can be written as a sum of positive squares in 2 ways, for example, as 3092249664 + 6819786724 = 55608^2 + 82582^2 .

It is not an unprimeable number, because it can be changed into a prime (9912036383) 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, 72882553 + ... + 72882688.

It is an arithmetic number, because the mean of its divisors is an integer number (1530535041).

Almost surely, 2^9912036388 is an apocalyptic number.

It is an amenable number.

9912036388 is a deficient number, since it is larger than the sum of its proper divisors (8454384104).

9912036388 is a wasteful number, since it uses less digits than its factorization.

9912036388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145765262 (or 145765260 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 9912036388 is about 99559.2104629200. The cubic root of 9912036388 is about 2148.0990146900.

The spelling of 9912036388 in words is "nine billion, nine hundred twelve million, thirty-six thousand, three hundred eighty-eight".