797191 has 4 divisors (see below), whose sum is σ = 798984. Its totient is φ = 795400.

The previous prime is 797171. The next prime is 797201. The reversal of 797191 is 191797.

It is a happy number.

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 797191 - 2⁷ = 797063 is a prime.

It is a Duffinian number.

797191 is a lucky number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 336 + ... + 1306.

It is an arithmetic number, because the mean of its divisors is an integer number (199746).

2⁷⁹⁷¹⁹¹ is an apocalyptic number.

797191 is a deficient number, since it is larger than the sum of its proper divisors (1793).

797191 is an equidigital number, since it uses as much as digits as its factorization.

797191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its digits is 3969, while the sum is 34.

The square root of 797191 is about 892.8555314271. The cubic root of 797191 is about 92.7229973970.

The spelling of 797191 in words is "seven hundred ninety-seven thousand, one hundred ninety-one".