79808 has 28 divisors (see below), whose sum is σ = 167640. Its totient is φ = 37632.

The previous prime is 79801. The next prime is 79811. The reversal of 79808 is 80897.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79801) 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, 1835 + ... + 1877.

2⁷⁹⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83820).

79808 is an abundant number, since it is smaller than the sum of its proper divisors (87832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

79808 is a wasteful number, since it uses less digits than its factorization.

79808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 79808 is about 282.5030973282. The cubic root of 79808 is about 43.0541952320.

Subtracting 79808 from its reverse (80897), we obtain a square (1089 = 33²).

The spelling of 79808 in words is "seventy-nine thousand, eight hundred eight".