8210749 has 2 divisors, whose sum is σ = 8210750. Its totient is φ = 8210748.

The previous prime is 8210729. The next prime is 8210767. The reversal of 8210749 is 9470128.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6502500 + 1708249 = 2550^2 + 1307^2 .

It is a cyclic number.

It is not a de Polignac number, because 8210749 - 2⁷ = 8210621 is a prime.

It is a Chen prime.

8210749 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 8210749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8210729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4105374 + 4105375.

It is an arithmetic number, because the mean of its divisors is an integer number (4105375).

Almost surely, 2^8210749 is an apocalyptic number.

It is an amenable number.

8210749 is a deficient number, since it is larger than the sum of its proper divisors (1).

8210749 is an equidigital number, since it uses as much as digits as its factorization.

8210749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 8210749 is about 2865.4404547992. The cubic root of 8210749 is about 201.7410415590.

The spelling of 8210749 in words is "eight million, two hundred ten thousand, seven hundred forty-nine".