798742897 has 2 divisors, whose sum is σ = 798742898. Its totient is φ = 798742896.

The previous prime is 798742849. The next prime is 798742921. The reversal of 798742897 is 798247897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 771117361 + 27625536 = 27769^2 + 5256^2 .

It is an emirp because it is prime and its reverse (798247897) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-798742897 is a prime.

It is not a weakly prime, because it can be changed into another prime (798742097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399371448 + 399371449.

It is an arithmetic number, because the mean of its divisors is an integer number (399371449).

Almost surely, 2^798742897 is an apocalyptic number.

It is an amenable number.

798742897 is a deficient number, since it is larger than the sum of its proper divisors (1).

798742897 is an equidigital number, since it uses as much as digits as its factorization.

798742897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 61.

The square root of 798742897 is about 28262.0398591468. The cubic root of 798742897 is about 927.8312655370.

The spelling of 798742897 in words is "seven hundred ninety-eight million, seven hundred forty-two thousand, eight hundred ninety-seven".