9865040 has 40 divisors (see below), whose sum is σ = 23067720. Its totient is φ = 3923456.

The previous prime is 9865033. The next prime is 9865057. The reversal of 9865040 is 405689.

It can be written as a sum of positive squares in 4 ways, for example, as 80656 + 9784384 = 284^2 + 3128^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 9864988 and 9865006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25166 + ... + 25554.

It is an arithmetic number, because the mean of its divisors is an integer number (576693).

Almost surely, 2^9865040 is an apocalyptic number.

It is an amenable number.

9865040 is an abundant number, since it is smaller than the sum of its proper divisors (13202680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9865040 is a wasteful number, since it uses less digits than its factorization.

9865040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 713 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 9865040 is about 3140.8661225847. The cubic root of 9865040 is about 214.4698675168.

The spelling of 9865040 in words is "nine million, eight hundred sixty-five thousand, forty".