971224985 has 8 divisors (see below), whose sum is σ = 1167136776. Its totient is φ = 775868800.

The previous prime is 971224963. The next prime is 971224999. The reversal of 971224985 is 589422179.

It can be written as a sum of positive squares in 4 ways, for example, as 70744921 + 900480064 = 8411^2 + 30008^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 971224985 - 2²² = 967030681 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135044 + ... + 142053.

It is an arithmetic number, because the mean of its divisors is an integer number (145892097).

Almost surely, 2^971224985 is an apocalyptic number.

It is an amenable number.

971224985 is a deficient number, since it is larger than the sum of its proper divisors (195911791).

971224985 is a wasteful number, since it uses less digits than its factorization.

971224985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277803.

The product of its digits is 362880, while the sum is 47.

The square root of 971224985 is about 31164.4827487959. The cubic root of 971224985 is about 990.3148286199.

The spelling of 971224985 in words is "nine hundred seventy-one million, two hundred twenty-four thousand, nine hundred eighty-five".