9938858867 has 16 divisors (see below), whose sum is σ = 11578133952. Its totient is φ = 8354586240.

The previous prime is 9938858861. The next prime is 9938858921. The reversal of 9938858867 is 7688588399.

It is not a de Polignac number, because 9938858867 - 2¹⁶ = 9938793331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9938858867.

It is not an unprimeable number, because it can be changed into a prime (9938858861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1122317 + ... + 1131137.

It is an arithmetic number, because the mean of its divisors is an integer number (723633372).

Almost surely, 2^9938858867 is an apocalyptic number.

9938858867 is a deficient number, since it is larger than the sum of its proper divisors (1639275085).

9938858867 is a wasteful number, since it uses less digits than its factorization.

9938858867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11918.

The product of its digits is 209018880, while the sum is 71.

The square root of 9938858867 is about 99693.8256212490. The cubic root of 9938858867 is about 2150.0348915917.

The spelling of 9938858867 in words is "nine billion, nine hundred thirty-eight million, eight hundred fifty-eight thousand, eight hundred sixty-seven".