9875791 has 4 divisors (see below), whose sum is σ = 9883192. Its totient is φ = 9868392.

The previous prime is 9875783. The next prime is 9875813. The reversal of 9875791 is 1975789.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 9875791 - 2³ = 9875783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9875741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1080 + ... + 4573.

It is an arithmetic number, because the mean of its divisors is an integer number (2470798).

Almost surely, 2^9875791 is an apocalyptic number.

9875791 is a deficient number, since it is larger than the sum of its proper divisors (7401).

9875791 is a wasteful number, since it uses less digits than its factorization.

9875791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7400.

The product of its digits is 158760, while the sum is 46.

The square root of 9875791 is about 3142.5771271363. The cubic root of 9875791 is about 214.5477495609.

The spelling of 9875791 in words is "nine million, eight hundred seventy-five thousand, seven hundred ninety-one".