79169 has 4 divisors (see below), whose sum is σ = 83844. Its totient is φ = 74496.

The previous prime is 79159. The next prime is 79181. The reversal of 79169 is 96197.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34225 + 44944 = 185^2 + 212^2 .

It is a cyclic number.

It is not a de Polignac number, because 79169 - 2⁴ = 79153 is a prime.

It is a super-2 number, since 2×79169² = 12535461122, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312 + ... + 2345.

It is an arithmetic number, because the mean of its divisors is an integer number (20961).

2⁷⁹¹⁶⁹ is an apocalyptic number.

It is an amenable number.

79169 is a deficient number, since it is larger than the sum of its proper divisors (4675).

79169 is a wasteful number, since it uses less digits than its factorization.

79169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4674.

The product of its digits is 3402, while the sum is 32.

The square root of 79169 is about 281.3698633472. The cubic root of 79169 is about 42.9389796101.

The spelling of 79169 in words is "seventy-nine thousand, one hundred sixty-nine".