9418987 has 2 divisors, whose sum is σ = 9418988. Its totient is φ = 9418986.

The previous prime is 9418973. The next prime is 9419023. The reversal of 9418987 is 7898149.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9418987 - 2¹⁵ = 9386219 is a prime.

It is a super-2 number, since 2×9418987² = 177434632212338, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

9418987 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (9418907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4709493 + 4709494.

It is an arithmetic number, because the mean of its divisors is an integer number (4709494).

Almost surely, 2^9418987 is an apocalyptic number.

9418987 is a deficient number, since it is larger than the sum of its proper divisors (1).

9418987 is an equidigital number, since it uses as much as digits as its factorization.

9418987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 46.

The square root of 9418987 is about 3069.0368195901. The cubic root of 9418987 is about 211.1874303216.

The spelling of 9418987 in words is "nine million, four hundred eighteen thousand, nine hundred eighty-seven".