9872215 has 8 divisors (see below), whose sum is σ = 11864160. Its totient is φ = 7886112.

The previous prime is 9872207. The next prime is 9872243. The reversal of 9872215 is 5122789.

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 9872215 - 2³ = 9872207 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 4422 + ... + 6268.

It is an arithmetic number, because the mean of its divisors is an integer number (1483020).

Almost surely, 2^9872215 is an apocalyptic number.

9872215 is a deficient number, since it is larger than the sum of its proper divisors (1991945).

9872215 is a wasteful number, since it uses less digits than its factorization.

9872215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921.

The product of its digits is 10080, while the sum is 34.

The square root of 9872215 is about 3142.0081158393. The cubic root of 9872215 is about 214.5218506945.

The spelling of 9872215 in words is "nine million, eight hundred seventy-two thousand, two hundred fifteen".