9991794 has 16 divisors (see below), whose sum is σ = 20112768. Its totient is φ = 3309072.

The previous prime is 9991771. The next prime is 9991811. The reversal of 9991794 is 4971999.

9991794 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4362 + ... + 6245.

It is an arithmetic number, because the mean of its divisors is an integer number (1257048).

Almost surely, 2^9991794 is an apocalyptic number.

9991794 is an abundant number, since it is smaller than the sum of its proper divisors (10120974).

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

9991794 is a wasteful number, since it uses less digits than its factorization.

9991794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10769.

The product of its digits is 183708, while the sum is 48.

The square root of 9991794 is about 3160.9799113566. The cubic root of 9991794 is about 215.3845219060.

The spelling of 9991794 in words is "nine million, nine hundred ninety-one thousand, seven hundred ninety-four".