823971 has 8 divisors (see below), whose sum is σ = 1102864. Its totient is φ = 547200.

The previous prime is 823969. The next prime is 823981. The reversal of 823971 is 179328.

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 823971 - 2¹ = 823969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071 + ... + 1671.

It is an arithmetic number, because the mean of its divisors is an integer number (137858).

2⁸²³⁹⁷¹ is an apocalyptic number.

823971 is a deficient number, since it is larger than the sum of its proper divisors (278893).

823971 is a wasteful number, since it uses less digits than its factorization.

823971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061.

The product of its digits is 3024, while the sum is 30.

The square root of 823971 is about 907.7284836337. The cubic root of 823971 is about 93.7498631109.

The spelling of 823971 in words is "eight hundred twenty-three thousand, nine hundred seventy-one".