9941994668 has 12 divisors (see below), whose sum is σ = 17408939352. Its totient is φ = 4968012000.

The previous prime is 9941994653. The next prime is 9941994677. The reversal of 9941994668 is 8664991499.

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, 738833 + ... + 752168.

It is an arithmetic number, because the mean of its divisors is an integer number (1450744946).

Almost surely, 2^9941994668 is an apocalyptic number.

It is an amenable number.

9941994668 is a deficient number, since it is larger than the sum of its proper divisors (7466944684).

9941994668 is a wasteful number, since it uses less digits than its factorization.

9941994668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492672 (or 1492670 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 65.

The square root of 9941994668 is about 99709.5515384559. The cubic root of 9941994668 is about 2150.2609863817.

The spelling of 9941994668 in words is "nine billion, nine hundred forty-one million, nine hundred ninety-four thousand, six hundred sixty-eight".