891140 has 24 divisors (see below), whose sum is σ = 1982232. Its totient is φ = 335360.

The previous prime is 891133. The next prime is 891151. The reversal of 891140 is 41198.

It can be written as a sum of positive squares in 4 ways, for example, as 322624 + 568516 = 568^2 + 754^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971 + ... + 1650.

It is an arithmetic number, because the mean of its divisors is an integer number (82593).

2⁸⁹¹¹⁴⁰ is an apocalyptic number.

It is an amenable number.

891140 is an abundant number, since it is smaller than the sum of its proper divisors (1091092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

891140 is a wasteful number, since it uses less digits than its factorization.

891140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647 (or 2645 counting only the distinct ones).

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

The square root of 891140 is about 944.0021186417. The cubic root of 891140 is about 96.2310695327.

The spelling of 891140 in words is "eight hundred ninety-one thousand, one hundred forty".