9963438938 has 8 divisors (see below), whose sum is σ = 15077416788. Its totient is φ = 4937633344.

The previous prime is 9963438893. The next prime is 9963438971. The reversal of 9963438938 is 8398343699.

It can be written as a sum of positive squares in 2 ways, for example, as 9888910249 + 74528689 = 99443^2 + 8633^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22042781 + ... + 22043232.

Almost surely, 2^9963438938 is an apocalyptic number.

9963438938 is a deficient number, since it is larger than the sum of its proper divisors (5113977850).

9963438938 is a wasteful number, since it uses less digits than its factorization.

9963438938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44086128.

The product of its digits is 30233088, while the sum is 62.

The square root of 9963438938 is about 99817.0272949460. The cubic root of 9963438938 is about 2151.8058696661.

The spelling of 9963438938 in words is "nine billion, nine hundred sixty-three million, four hundred thirty-eight thousand, nine hundred thirty-eight".