9813975 has 48 divisors (see below), whose sum is σ = 17498880. Its totient is φ = 4838400.

The previous prime is 9813971. The next prime is 9813997. The reversal of 9813975 is 5793189.

It is a happy number.

It is not a de Polignac number, because 9813975 - 2² = 9813971 is a prime.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9813971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 101127 + ... + 101223.

It is an arithmetic number, because the mean of its divisors is an integer number (364560).

Almost surely, 2^9813975 is an apocalyptic number.

9813975 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

9813975 is a deficient number, since it is larger than the sum of its proper divisors (7684905).

9813975 is a wasteful number, since it uses less digits than its factorization.

9813975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 195 counting only the distinct ones).

The product of its digits is 68040, while the sum is 42.

The square root of 9813975 is about 3132.7264483194. The cubic root of 9813975 is about 214.0991693978.

The spelling of 9813975 in words is "nine million, eight hundred thirteen thousand, nine hundred seventy-five".