9999995938 has 8 divisors (see below), whose sum is σ = 15137608860. Its totient is φ = 4954126320.

The previous prime is 9999995911. The next prime is 9999995953. The reversal of 9999995938 is 8395999999.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8342447569 + 1657548369 = 91337^2 + 40713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22935553 + ... + 22935988.

Almost surely, 2^9999995938 is an apocalyptic number.

9999995938 is a deficient number, since it is larger than the sum of its proper divisors (5137612922).

9999995938 is a wasteful number, since it uses less digits than its factorization.

9999995938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45871652.

The product of its digits is 573956280, while the sum is 79.

The square root of 9999995938 is about 99999.9796899979. The cubic root of 9999995938 is about 2154.4343983214.

The spelling of 9999995938 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-five thousand, nine hundred thirty-eight".