9857965 has 16 divisors (see below), whose sum is σ = 13039488. Its totient is φ = 7108416.

The previous prime is 9857963. The next prime is 9857971. The reversal of 9857965 is 5697589.

It is not a de Polignac number, because 9857965 - 2¹ = 9857963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9857963) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032 + ... + 4558.

It is an arithmetic number, because the mean of its divisors is an integer number (814968).

Almost surely, 2^9857965 is an apocalyptic number.

It is an amenable number.

9857965 is a deficient number, since it is larger than the sum of its proper divisors (3181523).

9857965 is a wasteful number, since it uses less digits than its factorization.

9857965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588.

The product of its digits is 680400, while the sum is 49.

The square root of 9857965 is about 3139.7396388873. The cubic root of 9857965 is about 214.4185841566.

The spelling of 9857965 in words is "nine million, eight hundred fifty-seven thousand, nine hundred sixty-five".