8384749 has 2 divisors, whose sum is σ = 8384750. Its totient is φ = 8384748.

The previous prime is 8384729. The next prime is 8384767. The reversal of 8384749 is 9474838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5322249 + 3062500 = 2307^2 + 1750^2 .

It is a cyclic number.

It is not a de Polignac number, because 8384749 - 2²¹ = 6287597 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8384729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4192374 + 4192375.

It is an arithmetic number, because the mean of its divisors is an integer number (4192375).

Almost surely, 2^8384749 is an apocalyptic number.

It is an amenable number.

8384749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8384749 is an equidigital number, since it uses as much as digits as its factorization.

8384749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 8384749 is about 2895.6431064618. The cubic root of 8384749 is about 203.1561725413.

The spelling of 8384749 in words is "eight million, three hundred eighty-four thousand, seven hundred forty-nine".