971797208 has 8 divisors (see below), whose sum is σ = 1822119780. Its totient is φ = 485898600.

The previous prime is 971797171. The next prime is 971797213. The reversal of 971797208 is 802797179.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60737318 + ... + 60737333.

Almost surely, 2^971797208 is an apocalyptic number.

It is an amenable number.

971797208 is a deficient number, since it is larger than the sum of its proper divisors (850322572).

971797208 is a wasteful number, since it uses less digits than its factorization.

971797208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121474657 (or 121474653 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 50.

The square root of 971797208 is about 31173.6620883720. The cubic root of 971797208 is about 990.5092805322.

The spelling of 971797208 in words is "nine hundred seventy-one million, seven hundred ninety-seven thousand, two hundred eight".