9872415 has 64 divisors (see below), whose sum is σ = 20766720. Its totient is φ = 4354560.

The previous prime is 9872407. The next prime is 9872417. The reversal of 9872415 is 5142789.

9872415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9872415 - 2³ = 9872407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9872415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872417) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29127 + ... + 29463.

It is an arithmetic number, because the mean of its divisors is an integer number (324480).

Almost surely, 2^9872415 is an apocalyptic number.

9872415 is an abundant number, since it is smaller than the sum of its proper divisors (10894305).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9872415 is a wasteful number, since it uses less digits than its factorization.

9872415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 383 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 9872415 is about 3142.0399424578. The cubic root of 9872415 is about 214.5232993420.

The spelling of 9872415 in words is "nine million, eight hundred seventy-two thousand, four hundred fifteen".