9866404 has 12 divisors (see below), whose sum is σ = 17687628. Its totient is φ = 4812800.

The previous prime is 9866327. The next prime is 9866407. The reversal of 9866404 is 4046689.

It can be written as a sum of positive squares in 2 ways, for example, as 5017600 + 4848804 = 2240^2 + 2202^2 .

It is not an unprimeable number, because it can be changed into a prime (9866407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29917 + ... + 30244.

It is an arithmetic number, because the mean of its divisors is an integer number (1473969).

Almost surely, 2^9866404 is an apocalyptic number.

It is an amenable number.

9866404 is a deficient number, since it is larger than the sum of its proper divisors (7821224).

9866404 is a wasteful number, since it uses less digits than its factorization.

9866404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60206 (or 60204 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 9866404 is about 3141.0832526375. The cubic root of 9866404 is about 214.4797516943.

The spelling of 9866404 in words is "nine million, eight hundred sixty-six thousand, four hundred four".