9864087 has 4 divisors (see below), whose sum is σ = 13152120. Its totient is φ = 6576056.

The previous prime is 9864083. The next prime is 9864091. The reversal of 9864087 is 7804689.

It is a happy number.

9864087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7804689 = 3 ⋅2601563.

It is an interprime number because it is at equal distance from previous prime (9864083) and next prime (9864091).

It is a cyclic number.

It is not a de Polignac number, because 9864087 - 2² = 9864083 is a prime.

It is a super-3 number, since 3×9864087³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9864083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1644012 + ... + 1644017.

It is an arithmetic number, because the mean of its divisors is an integer number (3288030).

Almost surely, 2^9864087 is an apocalyptic number.

9864087 is a deficient number, since it is larger than the sum of its proper divisors (3288033).

9864087 is a wasteful number, since it uses less digits than its factorization.

9864087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3288032.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 9864087 is about 3140.7144091751. The cubic root of 9864087 is about 214.4629610956.

The spelling of 9864087 in words is "nine million, eight hundred sixty-four thousand, eighty-seven".