79788191 has 8 divisors (see below), whose sum is σ = 96550560. Its totient is φ = 64366848.

The previous prime is 79788143. The next prime is 79788209. The reversal of 79788191 is 19188797.

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

It is not a de Polignac number, because 79788191 - 2¹⁴ = 79771807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79788791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335126 + ... + 335363.

It is an arithmetic number, because the mean of its divisors is an integer number (12068820).

Almost surely, 2^79788191 is an apocalyptic number.

79788191 is a deficient number, since it is larger than the sum of its proper divisors (16762369).

79788191 is a wasteful number, since it uses less digits than its factorization.

79788191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670513.

The product of its digits is 254016, while the sum is 50.

The square root of 79788191 is about 8932.4235792981. The cubic root of 79788191 is about 430.5063280249.

It can be divided in two parts, 797 and 88191, that added together give a palindrome (88988).

The spelling of 79788191 in words is "seventy-nine million, seven hundred eighty-eight thousand, one hundred ninety-one".