9938394456 has 16 divisors (see below), whose sum is σ = 24845986200. Its totient is φ = 3312798144.

The previous prime is 9938394449. The next prime is 9938394469. The reversal of 9938394456 is 6544938399.

It is a self number, because there is not a number n which added to its sum of digits gives 9938394456.

It is a congruent number.

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, 207049861 + ... + 207049908.

Almost surely, 2^9938394456 is an apocalyptic number.

It is an amenable number.

9938394456 is an abundant number, since it is smaller than the sum of its proper divisors (14907591744).

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

9938394456 is a wasteful number, since it uses less digits than its factorization.

9938394456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414099778 (or 414099774 counting only the distinct ones).

The product of its digits is 25194240, while the sum is 60.

The square root of 9938394456 is about 99691.4964076676. The cubic root of 9938394456 is about 2150.0014029917.

The spelling of 9938394456 in words is "nine billion, nine hundred thirty-eight million, three hundred ninety-four thousand, four hundred fifty-six".