9971285 has 16 divisors (see below), whose sum is σ = 12344832. Its totient is φ = 7728000.

The previous prime is 9971281. The next prime is 9971287. The reversal of 9971285 is 5821799.

It is not a de Polignac number, because 9971285 - 2² = 9971281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9971281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35345 + ... + 35625.

It is an arithmetic number, because the mean of its divisors is an integer number (771552).

Almost surely, 2^9971285 is an apocalyptic number.

It is an amenable number.

9971285 is a deficient number, since it is larger than the sum of its proper divisors (2373547).

9971285 is a wasteful number, since it uses less digits than its factorization.

9971285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484.

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

The square root of 9971285 is about 3157.7341560049. The cubic root of 9971285 is about 215.2370559982.

The spelling of 9971285 in words is "nine million, nine hundred seventy-one thousand, two hundred eighty-five".