9865404 has 36 divisors (see below), whose sum is σ = 25521496. Its totient is φ = 3211488.

The previous prime is 9865403. The next prime is 9865411. The reversal of 9865404 is 4045689.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9865403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1639 + ... + 4734.

Almost surely, 2^9865404 is an apocalyptic number.

It is an amenable number.

9865404 is an abundant number, since it is smaller than the sum of its proper divisors (15656092).

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

9865404 is a wasteful number, since it uses less digits than its factorization.

9865404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426 (or 6421 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 9865404 is about 3140.9240678501. The cubic root of 9865404 is about 214.4725053190.

The spelling of 9865404 in words is "nine million, eight hundred sixty-five thousand, four hundred four".