9864427 has 2 divisors, whose sum is σ = 9864428. Its totient is φ = 9864426.

The previous prime is 9864397. The next prime is 9864433. The reversal of 9864427 is 7244689.

9864427 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 9864427 - 2¹¹ = 9862379 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9864427.

It is not a weakly prime, because it can be changed into another prime (9864457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4932213 + 4932214.

It is an arithmetic number, because the mean of its divisors is an integer number (4932214).

Almost surely, 2^9864427 is an apocalyptic number.

9864427 is a deficient number, since it is larger than the sum of its proper divisors (1).

9864427 is an equidigital number, since it uses as much as digits as its factorization.

9864427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The square root of 9864427 is about 3140.7685365210. The cubic root of 9864427 is about 214.4654251374.

The spelling of 9864427 in words is "nine million, eight hundred sixty-four thousand, four hundred twenty-seven".