991292 has 12 divisors (see below), whose sum is σ = 1757280. Its totient is φ = 489216.

The previous prime is 991273. The next prime is 991313. The reversal of 991292 is 292199.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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, 1253 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (146440).

2⁹⁹¹²⁹² is an apocalyptic number.

It is an amenable number.

991292 is a deficient number, since it is larger than the sum of its proper divisors (765988).

991292 is a wasteful number, since it uses less digits than its factorization.

991292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220 (or 3218 counting only the distinct ones).

The product of its digits is 2916, while the sum is 32.

The square root of 991292 is about 995.6364798459. The cubic root of 991292 is about 99.7088866861.

The spelling of 991292 in words is "nine hundred ninety-one thousand, two hundred ninety-two".