8340749 has 2 divisors, whose sum is σ = 8340750. Its totient is φ = 8340748.

The previous prime is 8340733. The next prime is 8340781. The reversal of 8340749 is 9470438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4380649 + 3960100 = 2093^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 8340749 - 2⁴ = 8340733 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8340049) 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 as a sum of consecutive naturals, namely, 4170374 + 4170375.

It is an arithmetic number, because the mean of its divisors is an integer number (4170375).

Almost surely, 2^8340749 is an apocalyptic number.

It is an amenable number.

8340749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8340749 is an equidigital number, since it uses as much as digits as its factorization.

8340749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 8340749 is about 2888.0354914717. The cubic root of 8340749 is about 202.8001867995.

The spelling of 8340749 in words is "eight million, three hundred forty thousand, seven hundred forty-nine".