99999013948 has 12 divisors (see below), whose sum is σ = 175263830280. Its totient is φ = 49923633872.

The previous prime is 99999013831. The next prime is 99999013949. The reversal of 99999013948 is 84931099999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99999013949) 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, 18965311 + ... + 18970582.

It is an arithmetic number, because the mean of its divisors is an integer number (14605319190).

Almost surely, 2^99999013948 is an apocalyptic number.

It is an amenable number.

99999013948 is a deficient number, since it is larger than the sum of its proper divisors (75264816332).

99999013948 is a wasteful number, since it uses less digits than its factorization.

99999013948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37936556 (or 37936554 counting only the distinct ones).

The product of its (nonzero) digits is 51018336, while the sum is 70.

The spelling of 99999013948 in words is "ninety-nine billion, nine hundred ninety-nine million, thirteen thousand, nine hundred forty-eight".