79168819 has 4 divisors (see below), whose sum is σ = 79186680. Its totient is φ = 79150960.

The previous prime is 79168807. The next prime is 79168841. The reversal of 79168819 is 91886197.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 79168819 - 2¹¹ = 79166771 is a prime.

It is a super-2 number, since 2×79168819² = 12535403803709522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79168919) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3327 + ... + 13015.

It is an arithmetic number, because the mean of its divisors is an integer number (19796670).

It is a vampire number, since it can be written as 8171 ⋅ 9689 (with its own digits).

Almost surely, 2^79168819 is an apocalyptic number.

79168819 is a deficient number, since it is larger than the sum of its proper divisors (17861).

79168819 is an equidigital number, since it uses as much as digits as its factorization.

79168819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17860.

The product of its digits is 217728, while the sum is 49.

The square root of 79168819 is about 8897.6861598957. The cubic root of 79168819 is about 429.3894688702.

The spelling of 79168819 in words is "seventy-nine million, one hundred sixty-eight thousand, eight hundred nineteen".