9999867948 has 48 divisors (see below), whose sum is σ = 26777017344. Its totient is φ = 2845244160.

The previous prime is 9999867923. The next prime is 9999867949. The reversal of 9999867948 is 8497689999.

It is not an unprimeable number, because it can be changed into a prime (9999867949) 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, 226740 + ... + 267227.

It is an arithmetic number, because the mean of its divisors is an integer number (557854528).

Almost surely, 2^9999867948 is an apocalyptic number.

It is an amenable number.

9999867948 is an abundant number, since it is smaller than the sum of its proper divisors (16777149396).

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

9999867948 is a wasteful number, since it uses less digits than its factorization.

9999867948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494222 (or 494220 counting only the distinct ones).

The product of its digits is 634894848, while the sum is 78.

The square root of 9999867948 is about 99999.3397378203. The cubic root of 9999867948 is about 2154.4252067432.

The spelling of 9999867948 in words is "nine billion, nine hundred ninety-nine million, eight hundred sixty-seven thousand, nine hundred forty-eight".