9938367387 has 64 divisors (see below), whose sum is σ = 16130271360. Its totient is φ = 6010785792.

The previous prime is 9938367379. The next prime is 9938367409. The reversal of 9938367387 is 7837638399.

9938367387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9938367387 - 2³ = 9938367379 is a prime.

It is a super-2 number, since 2×9938367387² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9938367287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10171843 + ... + 10172819.

It is an arithmetic number, because the mean of its divisors is an integer number (252035490).

Almost surely, 2^9938367387 is an apocalyptic number.

9938367387 is a deficient number, since it is larger than the sum of its proper divisors (6191903973).

9938367387 is a wasteful number, since it uses less digits than its factorization.

9938367387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469 (or 1463 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 63.

The square root of 9938367387 is about 99691.3606437388. The cubic root of 9938367387 is about 2149.9994510184. Note that the first 3 decimals are identical.

The spelling of 9938367387 in words is "nine billion, nine hundred thirty-eight million, three hundred sixty-seven thousand, three hundred eighty-seven".