8749743 has 4 divisors (see below), whose sum is σ = 11666328. Its totient is φ = 5833160.

The previous prime is 8749733. The next prime is 8749751. The reversal of 8749743 is 3479478.

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 8749743 - 2²⁰ = 7701167 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8749695 and 8749704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8749733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1458288 + ... + 1458293.

It is an arithmetic number, because the mean of its divisors is an integer number (2916582).

Almost surely, 2^8749743 is an apocalyptic number.

8749743 is a deficient number, since it is larger than the sum of its proper divisors (2916585).

8749743 is a wasteful number, since it uses less digits than its factorization.

8749743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916584.

The product of its digits is 169344, while the sum is 42.

The square root of 8749743 is about 2957.9964503021. The cubic root of 8749743 is about 206.0622475034.

The spelling of 8749743 in words is "eight million, seven hundred forty-nine thousand, seven hundred forty-three".