9925871 has 4 divisors (see below), whose sum is σ = 10065744. Its totient is φ = 9786000.

The previous prime is 9925843. The next prime is 9925873. The reversal of 9925871 is 1785299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1785299 = 103 ⋅17333.

It is a cyclic number.

It is not a de Polignac number, because 9925871 - 2¹⁰ = 9924847 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 (9925873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69830 + ... + 69971.

It is an arithmetic number, because the mean of its divisors is an integer number (2516436).

Almost surely, 2^9925871 is an apocalyptic number.

9925871 is a deficient number, since it is larger than the sum of its proper divisors (139873).

9925871 is a wasteful number, since it uses less digits than its factorization.

9925871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139872.

The product of its digits is 45360, while the sum is 41.

The square root of 9925871 is about 3150.5350339268. The cubic root of 9925871 is about 214.9097945004.

The spelling of 9925871 in words is "nine million, nine hundred twenty-five thousand, eight hundred seventy-one".