79808321 has 8 divisors (see below), whose sum is σ = 83374080. Its totient is φ = 76250592.

The previous prime is 79808317. The next prime is 79808327. The reversal of 79808321 is 12380897.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79808321 - 2² = 79808317 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (79808327) 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 7 ways as a sum of consecutive naturals, for example, 28061 + ... + 30773.

It is an arithmetic number, because the mean of its divisors is an integer number (10421760).

Almost surely, 2^79808321 is an apocalyptic number.

It is an amenable number.

79808321 is a deficient number, since it is larger than the sum of its proper divisors (3565759).

79808321 is a wasteful number, since it uses less digits than its factorization.

79808321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 79808321 is about 8933.5503020915. The cubic root of 79808321 is about 430.5425295545.

The spelling of 79808321 in words is "seventy-nine million, eight hundred eight thousand, three hundred twenty-one".