9885915 has 64 divisors (see below), whose sum is σ = 19514880. Its totient is φ = 4717440.

The previous prime is 9885913. The next prime is 9885979. The reversal of 9885915 is 5195889.

It is not a de Polignac number, because 9885915 - 2¹ = 9885913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (9885913) 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, 75400 + ... + 75530.

It is an arithmetic number, because the mean of its divisors is an integer number (304920).

Almost surely, 2^9885915 is an apocalyptic number.

9885915 is a deficient number, since it is larger than the sum of its proper divisors (9628965).

9885915 is a wasteful number, since it uses less digits than its factorization.

9885915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 195 counting only the distinct ones).

The product of its digits is 129600, while the sum is 45.

The square root of 9885915 is about 3144.1874944093. The cubic root of 9885915 is about 214.6210378546.

It can be divided in two parts, 988 and 5915, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 9885915 in words is "nine million, eight hundred eighty-five thousand, nine hundred fifteen".