9872863 has 24 divisors (see below), whose sum is σ = 13502160. Its totient is φ = 7096320.

The previous prime is 9872839. The next prime is 9872887. The reversal of 9872863 is 3682789.

It is an interprime number because it is at equal distance from previous prime (9872839) and next prime (9872887).

It is not a de Polignac number, because 9872863 - 2¹⁷ = 9741791 is a prime.

9872863 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6303 + ... + 7711.

It is an arithmetic number, because the mean of its divisors is an integer number (562590).

Almost surely, 2^9872863 is an apocalyptic number.

9872863 is a deficient number, since it is larger than the sum of its proper divisors (3629297).

9872863 is a wasteful number, since it uses less digits than its factorization.

9872863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1447 (or 1440 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 9872863 is about 3142.1112329133. Note that the first 3 decimals coincide. The cubic root of 9872863 is about 214.5265442416.

The spelling of 9872863 in words is "nine million, eight hundred seventy-two thousand, eight hundred sixty-three".