891122 has 8 divisors (see below), whose sum is σ = 1344000. Its totient is φ = 443124.

The previous prime is 891103. The next prime is 891133. The reversal of 891122 is 221198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722 + ... + 1517.

It is an arithmetic number, because the mean of its divisors is an integer number (168000).

2⁸⁹¹¹²² is an apocalyptic number.

891122 is a deficient number, since it is larger than the sum of its proper divisors (452878).

891122 is a wasteful number, since it uses less digits than its factorization.

891122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2440.

The product of its digits is 288, while the sum is 23.

The square root of 891122 is about 943.9925847166. The cubic root of 891122 is about 96.2304216095.

The spelling of 891122 in words is "eight hundred ninety-one thousand, one hundred twenty-two".