891093 has 8 divisors (see below), whose sum is σ = 1357888. Its totient is φ = 509184.

The previous prime is 891091. The next prime is 891101. The reversal of 891093 is 390198.

It is a happy number.

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

It is not a de Polignac number, because 891093 - 2¹ = 891091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 891093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891091) 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, 21196 + ... + 21237.

It is an arithmetic number, because the mean of its divisors is an integer number (169736).

2⁸⁹¹⁰⁹³ is an apocalyptic number.

It is an amenable number.

891093 is a deficient number, since it is larger than the sum of its proper divisors (466795).

891093 is a wasteful number, since it uses less digits than its factorization.

891093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42443.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 891093 is about 943.9772243015. The cubic root of 891093 is about 96.2293777149.

The spelling of 891093 in words is "eight hundred ninety-one thousand, ninety-three".