991796 has 12 divisors (see below), whose sum is σ = 1869252. Its totient is φ = 457728.

The previous prime is 991777. The next prime is 991811. The reversal of 991796 is 697199.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62500 + 929296 = 250^2 + 964^2 .

It is a congruent number.

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, 9485 + ... + 9588.

It is an arithmetic number, because the mean of its divisors is an integer number (155771).

2⁹⁹¹⁷⁹⁶ is an apocalyptic number.

It is an amenable number.

991796 is a deficient number, since it is larger than the sum of its proper divisors (877456).

991796 is a wasteful number, since it uses less digits than its factorization.

991796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19090 (or 19088 counting only the distinct ones).

The product of its digits is 30618, while the sum is 41.

The square root of 991796 is about 995.8895521091. The cubic root of 991796 is about 99.7257820659.

The spelling of 991796 in words is "nine hundred ninety-one thousand, seven hundred ninety-six".