9938893636 has 27 divisors (see below), whose sum is σ = 20235589437. Its totient is φ = 4258927680.

The previous prime is 9938893619. The next prime is 9938893661. The reversal of 9938893636 is 6363988399.

The square root of 9938893636 is 99694.

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., 224820036 + 9714073600 = 14994^2 + 98560^2 .

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, 1392156 + ... + 1399276.

Almost surely, 2^9938893636 is an apocalyptic number.

9938893636 is the 99694-th square number.

It is an amenable number.

9938893636 is an abundant number, since it is smaller than the sum of its proper divisors (10296695801).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9938893636 is an frugal number, since it uses more digits than its factorization.

9938893636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14260 (or 7130 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 64.

The cubic root of 9938893636 is about 2150.0373987365.

Multiplying 9938893636 by its sum of digits (64), we get a square (636089192704 = 797552²).

The spelling of 9938893636 in words is "nine billion, nine hundred thirty-eight million, eight hundred ninety-three thousand, six hundred thirty-six".