8340743 has 6 divisors (see below), whose sum is σ = 8719704. Its totient is φ = 7977596.

The previous prime is 8340733. The next prime is 8340749. The reversal of 8340743 is 3470438.

It is not a de Polignac number, because 8340743 - 2⁶ = 8340679 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8340749) 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 5 ways as a sum of consecutive naturals, for example, 7355 + ... + 8412.

It is an arithmetic number, because the mean of its divisors is an integer number (1453284).

Almost surely, 2^8340743 is an apocalyptic number.

8340743 is a deficient number, since it is larger than the sum of its proper divisors (378961).

8340743 is a wasteful number, since it uses less digits than its factorization.

8340743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15813 (or 15790 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 8340743 is about 2888.0344527031. The cubic root of 8340743 is about 202.8001381707.

The spelling of 8340743 in words is "eight million, three hundred forty thousand, seven hundred forty-three".