79823 has 2 divisors, whose sum is σ = 79824. Its totient is φ = 79822.

The previous prime is 79817. The next prime is 79829. The reversal of 79823 is 32897.

It is a balanced prime because it is at equal distance from previous prime (79817) and next prime (79829).

It is a cyclic number.

It is not a de Polignac number, because 79823 - 2¹⁴ = 63439 is a prime.

It is a super-2 number, since 2×79823² = 12743422658, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39911 + 39912.

It is an arithmetic number, because the mean of its divisors is an integer number (39912).

2⁷⁹⁸²³ is an apocalyptic number.

79823 is a deficient number, since it is larger than the sum of its proper divisors (1).

79823 is an equidigital number, since it uses as much as digits as its factorization.

79823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 79823 is about 282.5296444623. The cubic root of 79823 is about 43.0568924239.

The spelling of 79823 in words is "seventy-nine thousand, eight hundred twenty-three".