9861897 has 8 divisors (see below), whose sum is σ = 13169056. Its totient is φ = 6564672.

The previous prime is 9861883. The next prime is 9861913. The reversal of 9861897 is 7981689.

It is a happy number.

9861897 is digitally balanced in base 2, 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 9861897 - 2⁴ = 9861881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9861847) 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, 273 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (1646132).

Almost surely, 2^9861897 is an apocalyptic number.

It is an amenable number.

9861897 is a deficient number, since it is larger than the sum of its proper divisors (3307159).

9861897 is a wasteful number, since it uses less digits than its factorization.

9861897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4967.

The product of its digits is 217728, while the sum is 48.

The square root of 9861897 is about 3140.3657430306. The cubic root of 9861897 is about 214.4470884102.

The spelling of 9861897 in words is "nine million, eight hundred sixty-one thousand, eight hundred ninety-seven".