797989271 has 4 divisors (see below), whose sum is σ = 799894200. Its totient is φ = 796084344.

The previous prime is 797989267. The next prime is 797989277. The reversal of 797989271 is 172989797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 172989797 = 223 ⋅775739.

It is a cyclic number.

It is not a de Polignac number, because 797989271 - 2² = 797989267 is a prime.

It is a super-2 number, since 2×797989271² = 1273573753262222882, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 797989271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797989277) 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, 951836 + ... + 952673.

It is an arithmetic number, because the mean of its divisors is an integer number (199973550).

Almost surely, 2^797989271 is an apocalyptic number.

797989271 is a deficient number, since it is larger than the sum of its proper divisors (1904929).

797989271 is a wasteful number, since it uses less digits than its factorization.

797989271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904928.

The product of its digits is 4000752, while the sum is 59.

The square root of 797989271 is about 28248.7038817713. The cubic root of 797989271 is about 927.5393661047.

The spelling of 797989271 in words is "seven hundred ninety-seven million, nine hundred eighty-nine thousand, two hundred seventy-one".