9871897 has 8 divisors (see below), whose sum is σ = 11544896. Its totient is φ = 8264592.

The previous prime is 9871891. The next prime is 9871907. The reversal of 9871897 is 7981789.

9871897 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 9871897 - 2¹⁵ = 9839129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9871897.

It is not an unprimeable number, because it can be changed into a prime (9871891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16098 + ... + 16699.

It is an arithmetic number, because the mean of its divisors is an integer number (1443112).

Almost surely, 2^9871897 is an apocalyptic number.

It is an amenable number.

9871897 is a deficient number, since it is larger than the sum of its proper divisors (1672999).

9871897 is a wasteful number, since it uses less digits than its factorization.

9871897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32847.

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

The square root of 9871897 is about 3141.9575108521. The cubic root of 9871897 is about 214.5195473046.

The spelling of 9871897 in words is "nine million, eight hundred seventy-one thousand, eight hundred ninety-seven".