9487143871 has 4 divisors (see below), whose sum is σ = 9489883752. Its totient is φ = 9484403992.

The previous prime is 9487143857. The next prime is 9487143877. The reversal of 9487143871 is 1783417849.

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

It is a cyclic number.

It is not a de Polignac number, because 9487143871 - 2⁹ = 9487143359 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 (9487143877) 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, 1364740 + ... + 1371673.

It is an arithmetic number, because the mean of its divisors is an integer number (2372470938).

Almost surely, 2^9487143871 is an apocalyptic number.

9487143871 is a deficient number, since it is larger than the sum of its proper divisors (2739881).

9487143871 is a wasteful number, since it uses less digits than its factorization.

9487143871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739880.

The product of its digits is 1354752, while the sum is 52.

The square root of 9487143871 is about 97401.9705704151. The cubic root of 9487143871 is about 2116.9559872552.

The spelling of 9487143871 in words is "nine billion, four hundred eighty-seven million, one hundred forty-three thousand, eight hundred seventy-one".