891841 has 8 divisors (see below), whose sum is σ = 953120. Its totient is φ = 832032.

The previous prime is 891829. The next prime is 891851. The reversal of 891841 is 148198.

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

It is a cyclic number.

It is not a de Polignac number, because 891841 - 2⁵ = 891809 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (891851) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1066 + ... + 1708.

It is an arithmetic number, because the mean of its divisors is an integer number (119140).

2⁸⁹¹⁸⁴¹ is an apocalyptic number.

It is an amenable number.

891841 is a deficient number, since it is larger than the sum of its proper divisors (61279).

891841 is a wasteful number, since it uses less digits than its factorization.

891841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735.

The product of its digits is 2304, while the sum is 31.

The square root of 891841 is about 944.3733371924. The cubic root of 891841 is about 96.2562957595.

The spelling of 891841 in words is "eight hundred ninety-one thousand, eight hundred forty-one".