8971856 has 20 divisors (see below), whose sum is σ = 17514132. Its totient is φ = 4452096.

The previous prime is 8971849. The next prime is 8971873. The reversal of 8971856 is 6581798.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 4477456 = 2120^2 + 2116^2 .

It is a congruent 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, 146 + ... + 4238.

Almost surely, 2^8971856 is an apocalyptic number.

It is an amenable number.

8971856 is a deficient number, since it is larger than the sum of its proper divisors (8542276).

8971856 is a wasteful number, since it uses less digits than its factorization.

8971856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4238 (or 4232 counting only the distinct ones).

The product of its digits is 120960, while the sum is 44.

The square root of 8971856 is about 2995.3056605295. The cubic root of 8971856 is about 207.7913341286.

The spelling of 8971856 in words is "eight million, nine hundred seventy-one thousand, eight hundred fifty-six".