9867427 has 2 divisors, whose sum is σ = 9867428. Its totient is φ = 9867426.

The previous prime is 9867371. The next prime is 9867449. The reversal of 9867427 is 7247689.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9867427 is a prime.

It is a super-2 number, since 2×9867427² = 194732231200658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9867457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4933713 + 4933714.

It is an arithmetic number, because the mean of its divisors is an integer number (4933714).

Almost surely, 2^9867427 is an apocalyptic number.

9867427 is a deficient number, since it is larger than the sum of its proper divisors (1).

9867427 is an equidigital number, since it uses as much as digits as its factorization.

9867427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 43.

The square root of 9867427 is about 3141.2460903278. The cubic root of 9867427 is about 214.4871642296.

The spelling of 9867427 in words is "nine million, eight hundred sixty-seven thousand, four hundred twenty-seven".