797991471 has 6 divisors (see below), whose sum is σ = 1152654360. Its totient is φ = 531994308.

The previous prime is 797991437. The next prime is 797991511. The reversal of 797991471 is 174199797.

797991471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-797991471 is a prime.

It is a super-3 number, since 3×797991471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797991401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44332851 + ... + 44332868.

It is an arithmetic number, because the mean of its divisors is an integer number (192109060).

Almost surely, 2^797991471 is an apocalyptic number.

797991471 is a deficient number, since it is larger than the sum of its proper divisors (354662889).

797991471 is a wasteful number, since it uses less digits than its factorization.

797991471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88665725 (or 88665722 counting only the distinct ones).

The product of its digits is 1000188, while the sum is 54.

The square root of 797991471 is about 28248.7428215841. The cubic root of 797991471 is about 927.5402184908.

The spelling of 797991471 in words is "seven hundred ninety-seven million, nine hundred ninety-one thousand, four hundred seventy-one".