9894987 has 16 divisors (see below), whose sum is σ = 14848000. Its totient is φ = 6511752.

The previous prime is 9894979. The next prime is 9895001. The reversal of 9894987 is 7894989.

It is not a de Polignac number, because 9894987 - 2³ = 9894979 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9894967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187 + ... + 4452.

It is an arithmetic number, because the mean of its divisors is an integer number (928000).

Almost surely, 2^9894987 is an apocalyptic number.

9894987 is a deficient number, since it is larger than the sum of its proper divisors (4953013).

9894987 is a wasteful number, since it uses less digits than its factorization.

9894987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4727 (or 4721 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 9894987 is about 3145.6298256470. The cubic root of 9894987 is about 214.6866681572.

The spelling of 9894987 in words is "nine million, eight hundred ninety-four thousand, nine hundred eighty-seven".