79790 has 16 divisors (see below), whose sum is σ = 146880. Its totient is φ = 31200.

The previous prime is 79777. The next prime is 79801. The reversal of 79790 is 9797.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

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, 740 + ... + 840.

It is an arithmetic number, because the mean of its divisors is an integer number (9180).

2⁷⁹⁷⁹⁰ is an apocalyptic number.

79790 is a deficient number, since it is larger than the sum of its proper divisors (67090).

79790 is a wasteful number, since it uses less digits than its factorization.

79790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187.

The product of its (nonzero) digits is 3969, while the sum is 32.

The square root of 79790 is about 282.4712374738. The cubic root of 79790 is about 43.0509581556.

The spelling of 79790 in words is "seventy-nine thousand, seven hundred ninety".