9872743 has 4 divisors (see below), whose sum is σ = 9881200. Its totient is φ = 9864288.

The previous prime is 9872741. The next prime is 9872749. The reversal of 9872743 is 3472789.

9872743 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3472789 = 1613 ⋅2153.

It is a cyclic number.

It is not a de Polignac number, because 9872743 - 2¹ = 9872741 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9872696 and 9872705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872741) 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, 2130 + ... + 4927.

It is an arithmetic number, because the mean of its divisors is an integer number (2470300).

Almost surely, 2^9872743 is an apocalyptic number.

9872743 is a deficient number, since it is larger than the sum of its proper divisors (8457).

9872743 is a wasteful number, since it uses less digits than its factorization.

9872743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8456.

The product of its digits is 84672, while the sum is 40.

The square root of 9872743 is about 3142.0921374142. The cubic root of 9872743 is about 214.5256750817.

The spelling of 9872743 in words is "nine million, eight hundred seventy-two thousand, seven hundred forty-three".