971434985 has 4 divisors (see below), whose sum is σ = 1165721988. Its totient is φ = 777147984.

The previous prime is 971434967. The next prime is 971434991. The reversal of 971434985 is 589434179.

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

It can be written as a sum of positive squares in 2 ways, for example, as 207907561 + 763527424 = 14419^2 + 27632^2 .

It is a cyclic number.

It is not a de Polignac number, because 971434985 - 2⁸ = 971434729 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97143494 + ... + 97143503.

It is an arithmetic number, because the mean of its divisors is an integer number (291430497).

Almost surely, 2^971434985 is an apocalyptic number.

It is an amenable number.

971434985 is a deficient number, since it is larger than the sum of its proper divisors (194287003).

971434985 is a wasteful number, since it uses less digits than its factorization.

971434985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194287002.

The product of its digits is 1088640, while the sum is 50.

The square root of 971434985 is about 31167.8517867369. The cubic root of 971434985 is about 990.3861993562.

The spelling of 971434985 in words is "nine hundred seventy-one million, four hundred thirty-four thousand, nine hundred eighty-five".