9857897 has 8 divisors (see below), whose sum is σ = 11457600. Its totient is φ = 8306064.

The previous prime is 9857893. The next prime is 9857899. The reversal of 9857897 is 7987589.

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

It is a cyclic number.

It is not a de Polignac number, because 9857897 - 2² = 9857893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9857891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11522 + ... + 12347.

It is an arithmetic number, because the mean of its divisors is an integer number (1432200).

Almost surely, 2^9857897 is an apocalyptic number.

It is an amenable number.

9857897 is a deficient number, since it is larger than the sum of its proper divisors (1599703).

9857897 is a wasteful number, since it uses less digits than its factorization.

9857897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23935.

The product of its digits is 1270080, while the sum is 53.

The square root of 9857897 is about 3139.7288099452. The cubic root of 9857897 is about 214.4180911374.

The spelling of 9857897 in words is "nine million, eight hundred fifty-seven thousand, eight hundred ninety-seven".