891244 has 12 divisors (see below), whose sum is σ = 1569568. Its totient is φ = 442800.

The previous prime is 891239. The next prime is 891251. The reversal of 891244 is 442198.

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, 109 + ... + 1339.

2⁸⁹¹²⁴⁴ is an apocalyptic number.

It is an amenable number.

891244 is a deficient number, since it is larger than the sum of its proper divisors (678324).

891244 is a wasteful number, since it uses less digits than its factorization.

891244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1414 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

The square root of 891244 is about 944.0572016568. The cubic root of 891244 is about 96.2348129183.

The spelling of 891244 in words is "eight hundred ninety-one thousand, two hundred forty-four".