891741 has 4 divisors (see below), whose sum is σ = 1188992. Its totient is φ = 594492.

The previous prime is 891707. The next prime is 891743. The reversal of 891741 is 147198.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 891741 - 2⁶ = 891677 is a prime.

It is a super-2 number, since 2×891741² = 1590404022162, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 891699 and 891708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148621 + ... + 148626.

It is an arithmetic number, because the mean of its divisors is an integer number (297248).

2⁸⁹¹⁷⁴¹ is an apocalyptic number.

It is an amenable number.

891741 is a deficient number, since it is larger than the sum of its proper divisors (297251).

891741 is a wasteful number, since it uses less digits than its factorization.

891741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297250.

The product of its digits is 2016, while the sum is 30.

The square root of 891741 is about 944.3203905455. The cubic root of 891741 is about 96.2526979623.

It can be divided in two parts, 89 and 1741, that added together give a triangular number (1830 = T₆₀).

The spelling of 891741 in words is "eight hundred ninety-one thousand, seven hundred forty-one".