8971855 has 4 divisors (see below), whose sum is σ = 10766232. Its totient is φ = 7177480.

The previous prime is 8971849. The next prime is 8971873. The reversal of 8971855 is 5581798.

8971855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8971855 - 2⁷ = 8971727 is a prime.

It is a Duffinian number.

8971855 is a lucky number.

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, 897181 + ... + 897190.

It is an arithmetic number, because the mean of its divisors is an integer number (2691558).

Almost surely, 2^8971855 is an apocalyptic number.

8971855 is a deficient number, since it is larger than the sum of its proper divisors (1794377).

8971855 is a wasteful number, since it uses less digits than its factorization.

8971855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794376.

The product of its digits is 100800, while the sum is 43.

The square root of 8971855 is about 2995.3054936016. The cubic root of 8971855 is about 207.7913264085.

The spelling of 8971855 in words is "eight million, nine hundred seventy-one thousand, eight hundred fifty-five".