9747871 has 4 divisors (see below), whose sum is σ = 11140432. Its totient is φ = 8355312.

The previous prime is 9747863. The next prime is 9747901. The reversal of 9747871 is 1787479.

9747871 = T₉₅₃ + T₉₅₄ + ... + T₉₇₃.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9747871 - 2³ = 9747863 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 (9747811) 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, 696270 + ... + 696283.

It is an arithmetic number, because the mean of its divisors is an integer number (2785108).

Almost surely, 2^9747871 is an apocalyptic number.

9747871 is a deficient number, since it is larger than the sum of its proper divisors (1392561).

9747871 is a wasteful number, since it uses less digits than its factorization.

9747871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392560.

The product of its digits is 98784, while the sum is 43.

The square root of 9747871 is about 3122.1580677474. The cubic root of 9747871 is about 213.6173833968.

The spelling of 9747871 in words is "nine million, seven hundred forty-seven thousand, eight hundred seventy-one".