9866407 has 2 divisors, whose sum is σ = 9866408. Its totient is φ = 9866406.

The previous prime is 9866327. The next prime is 9866411. The reversal of 9866407 is 7046689.

9866407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9866407 - 2¹¹ = 9864359 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9866407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9866497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933203 + 4933204.

It is an arithmetic number, because the mean of its divisors is an integer number (4933204).

Almost surely, 2^9866407 is an apocalyptic number.

9866407 is a deficient number, since it is larger than the sum of its proper divisors (1).

9866407 is an equidigital number, since it uses as much as digits as its factorization.

9866407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 9866407 is about 3141.0837301798. The cubic root of 9866407 is about 214.4797734327.

The spelling of 9866407 in words is "nine million, eight hundred sixty-six thousand, four hundred seven".