9997853 has 8 divisors (see below), whose sum is σ = 10664640. Its totient is φ = 9339840.

The previous prime is 9997831. The next prime is 9997859. The reversal of 9997853 is 3587999.

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 9997853 - 2⁸ = 9997597 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9997859) 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 7 ways as a sum of consecutive naturals, for example, 248 + ... + 4478.

It is an arithmetic number, because the mean of its divisors is an integer number (1333080).

Almost surely, 2^9997853 is an apocalyptic number.

It is an amenable number.

9997853 is a deficient number, since it is larger than the sum of its proper divisors (666787).

9997853 is a wasteful number, since it uses less digits than its factorization.

9997853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387.

The product of its digits is 612360, while the sum is 50.

The square root of 9997853 is about 3161.9381714385. The cubic root of 9997853 is about 215.4280493287.

The spelling of 9997853 in words is "nine million, nine hundred ninety-seven thousand, eight hundred fifty-three".