891297 has 16 divisors (see below), whose sum is σ = 1440960. Its totient is φ = 540000.

The previous prime is 891287. The next prime is 891311. The reversal of 891297 is 792198.

It is a happy number.

891297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-891297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (891277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1204 + ... + 1797.

It is an arithmetic number, because the mean of its divisors is an integer number (90060).

2⁸⁹¹²⁹⁷ is an apocalyptic number.

It is an amenable number.

891297 is a deficient number, since it is larger than the sum of its proper divisors (549663).

891297 is a wasteful number, since it uses less digits than its factorization.

891297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3015 counting only the distinct ones).

The product of its digits is 9072, while the sum is 36.

The square root of 891297 is about 944.0852715724. The cubic root of 891297 is about 96.2367204932.

Subtracting from 891297 its reverse (792198), we obtain a palindrome (99099).

It can be divided in two parts, 8912 and 97, that added together give a palindrome (9009).

The spelling of 891297 in words is "eight hundred ninety-one thousand, two hundred ninety-seven".