991196 has 6 divisors (see below), whose sum is σ = 1734600. Its totient is φ = 495596.

The previous prime is 991187. The next prime is 991201. The reversal of 991196 is 691199.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

991196 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123896 + ... + 123903.

It is an arithmetic number, because the mean of its divisors is an integer number (289100).

2⁹⁹¹¹⁹⁶ is an apocalyptic number.

It is an amenable number.

991196 is a deficient number, since it is larger than the sum of its proper divisors (743404).

991196 is a wasteful number, since it uses less digits than its factorization.

991196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247803 (or 247801 counting only the distinct ones).

The product of its digits is 4374, while the sum is 35.

The square root of 991196 is about 995.5882683118. The cubic root of 991196 is about 99.7056678692.

The spelling of 991196 in words is "nine hundred ninety-one thousand, one hundred ninety-six".