9938394286 has 4 divisors (see below), whose sum is σ = 14907591432. Its totient is φ = 4969197142.

The previous prime is 9938394233. The next prime is 9938394311. The reversal of 9938394286 is 6824938399.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2484598570 + ... + 2484598573.

It is an arithmetic number, because the mean of its divisors is an integer number (3726897858).

Almost surely, 2^9938394286 is an apocalyptic number.

9938394286 is a deficient number, since it is larger than the sum of its proper divisors (4969197146).

9938394286 is a wasteful number, since it uses less digits than its factorization.

9938394286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4969197145.

The product of its digits is 20155392, while the sum is 61.

The square root of 9938394286 is about 99691.4955550372. The cubic root of 9938394286 is about 2150.0013907328.

The spelling of 9938394286 in words is "nine billion, nine hundred thirty-eight million, three hundred ninety-four thousand, two hundred eighty-six".