798105149 has 2 divisors, whose sum is σ = 798105150. Its totient is φ = 798105148.

The previous prime is 798105071. The next prime is 798105157. The reversal of 798105149 is 941501897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771839524 + 26265625 = 27782^2 + 5125^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-798105149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (798105169) 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, 399052574 + 399052575.

It is an arithmetic number, because the mean of its divisors is an integer number (399052575).

Almost surely, 2^798105149 is an apocalyptic number.

It is an amenable number.

798105149 is a deficient number, since it is larger than the sum of its proper divisors (1).

798105149 is an equidigital number, since it uses as much as digits as its factorization.

798105149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 44.

The square root of 798105149 is about 28250.7548394729. The cubic root of 798105149 is about 927.5842606952.

The spelling of 798105149 in words is "seven hundred ninety-eight million, one hundred five thousand, one hundred forty-nine".