910891 has 4 divisors (see below), whose sum is σ = 919512. Its totient is φ = 902272.

The previous prime is 910883. The next prime is 910909. The reversal of 910891 is 198019.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 198019 = 71 ⋅2789.

It is a cyclic number.

It is not a de Polignac number, because 910891 - 2³ = 910883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (910691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4150 + ... + 4363.

It is an arithmetic number, because the mean of its divisors is an integer number (229878).

2⁹¹⁰⁸⁹¹ is an apocalyptic number.

910891 is a deficient number, since it is larger than the sum of its proper divisors (8621).

910891 is a wasteful number, since it uses less digits than its factorization.

910891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 910891 is about 954.4060980526. The cubic root of 910891 is about 96.9368278227.

It can be divided in two parts, 9108 and 91, that multiplied together give a palindrome (828828).

The spelling of 910891 in words is "nine hundred ten thousand, eight hundred ninety-one".