9891875 has 60 divisors (see below), whose sum is σ = 16026120. Its totient is φ = 6048000.

The previous prime is 9891853. The next prime is 9891877. The reversal of 9891875 is 5781989.

It is a happy number.

It is not a de Polignac number, because 9891875 - 2¹⁴ = 9875491 is a prime.

Its product of digits (181440) is a multiple of the sum of its prime divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9891877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 520616 + ... + 520634.

It is an arithmetic number, because the mean of its divisors is an integer number (267102).

Almost surely, 2^9891875 is an apocalyptic number.

9891875 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

9891875 is a deficient number, since it is larger than the sum of its proper divisors (6134245).

9891875 is a wasteful number, since it uses less digits than its factorization.

9891875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70 (or 48 counting only the distinct ones).

The product of its digits is 181440, while the sum is 47.

The square root of 9891875 is about 3145.1351322320. The cubic root of 9891875 is about 214.6641592860.

The spelling of 9891875 in words is "nine million, eight hundred ninety-one thousand, eight hundred seventy-five".