9872867 has 8 divisors (see below), whose sum is σ = 10214400. Its totient is φ = 9536904.

The previous prime is 9872839. The next prime is 9872887. The reversal of 9872867 is 7682789.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9872867 - 2¹⁰ = 9871843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9872827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2384 + ... + 5042.

It is an arithmetic number, because the mean of its divisors is an integer number (1276800).

Almost surely, 2^9872867 is an apocalyptic number.

9872867 is a deficient number, since it is larger than the sum of its proper divisors (341533).

9872867 is a wasteful number, since it uses less digits than its factorization.

9872867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785.

The product of its digits is 338688, while the sum is 47.

The square root of 9872867 is about 3142.1118694279. Note that the first 3 decimals coincide. The cubic root of 9872867 is about 214.5265732135.

The spelling of 9872867 in words is "nine million, eight hundred seventy-two thousand, eight hundred sixty-seven".