971669271 has 4 divisors (see below), whose sum is σ = 1295559032. Its totient is φ = 647779512.

The previous prime is 971669261. The next prime is 971669311. The reversal of 971669271 is 172966179.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 971669271 - 2²³ = 963280663 is a prime.

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 971669271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (971669261) 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, 161944876 + ... + 161944881.

It is an arithmetic number, because the mean of its divisors is an integer number (323889758).

Almost surely, 2^971669271 is an apocalyptic number.

971669271 is a deficient number, since it is larger than the sum of its proper divisors (323889761).

971669271 is a wasteful number, since it uses less digits than its factorization.

971669271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323889760.

The product of its digits is 285768, while the sum is 48.

The square root of 971669271 is about 31171.6100161670. The cubic root of 971669271 is about 990.4658118105.

It can be divided in two parts, 9716 and 69271, that added together give a palindrome (78987).

The spelling of 971669271 in words is "nine hundred seventy-one million, six hundred sixty-nine thousand, two hundred seventy-one".