8971897 has 4 divisors (see below), whose sum is σ = 9787536. Its totient is φ = 8156260.

The previous prime is 8971883. The next prime is 8971913. The reversal of 8971897 is 7981798.

8971897 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8971897 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8971897.

It is not an unprimeable number, because it can be changed into a prime (8971297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407803 + ... + 407824.

It is an arithmetic number, because the mean of its divisors is an integer number (2446884).

Almost surely, 2^8971897 is an apocalyptic number.

It is an amenable number.

8971897 is a deficient number, since it is larger than the sum of its proper divisors (815639).

8971897 is a wasteful number, since it uses less digits than its factorization.

8971897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815638.

The product of its digits is 254016, while the sum is 49.

The square root of 8971897 is about 2995.3125045644. The cubic root of 8971897 is about 207.7916506529.

Subtracting from 8971897 its reverse (7981798), we obtain a palindrome (990099).

The spelling of 8971897 in words is "eight million, nine hundred seventy-one thousand, eight hundred ninety-seven".