799688749 has 2 divisors, whose sum is σ = 799688750. Its totient is φ = 799688748.

The previous prime is 799688719. The next prime is 799688753. The reversal of 799688749 is 947886997.

799688749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 770062500 + 29626249 = 27750^2 + 5443^2 .

It is a cyclic number.

It is not a de Polignac number, because 799688749 - 2¹⁵ = 799655981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (799688719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399844374 + 399844375.

It is an arithmetic number, because the mean of its divisors is an integer number (399844375).

Almost surely, 2^799688749 is an apocalyptic number.

It is an amenable number.

799688749 is a deficient number, since it is larger than the sum of its proper divisors (1).

799688749 is an equidigital number, since it uses as much as digits as its factorization.

799688749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54867456, while the sum is 67.

The square root of 799688749 is about 28278.7685198631. The cubic root of 799688749 is about 928.1973595087.

The spelling of 799688749 in words is "seven hundred ninety-nine million, six hundred eighty-eight thousand, seven hundred forty-nine".