9940000791 has 12 divisors (see below), whose sum is σ = 15417144312. Its totient is φ = 5680000368.

The previous prime is 9940000769. The next prime is 9940000823. The reversal of 9940000791 is 1970000499.

It is not a de Polignac number, because 9940000791 - 2¹⁰ = 9939999767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9940000391) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 33809380 + ... + 33809673.

It is an arithmetic number, because the mean of its divisors is an integer number (1284762026).

Almost surely, 2^9940000791 is an apocalyptic number.

9940000791 is a deficient number, since it is larger than the sum of its proper divisors (5477143521).

9940000791 is a wasteful number, since it uses less digits than its factorization.

9940000791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67619070 (or 67619063 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 39.

The square root of 9940000791 is about 99699.5526118347. The cubic root of 9940000791 is about 2150.1172311055.

The spelling of 9940000791 in words is "nine billion, nine hundred forty million, seven hundred ninety-one", and thus it is an aban number.