798538891 has 2 divisors, whose sum is σ = 798538892. Its totient is φ = 798538890.

The previous prime is 798538879. The next prime is 798538963. The reversal of 798538891 is 198835897.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 798538891 - 2⁹ = 798538379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (798535891) 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, 399269445 + 399269446.

It is an arithmetic number, because the mean of its divisors is an integer number (399269446).

Almost surely, 2^798538891 is an apocalyptic number.

798538891 is a deficient number, since it is larger than the sum of its proper divisors (1).

798538891 is an equidigital number, since it uses as much as digits as its factorization.

798538891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 58.

The square root of 798538891 is about 28258.4304411975. The cubic root of 798538891 is about 927.7522667073.

The spelling of 798538891 in words is "seven hundred ninety-eight million, five hundred thirty-eight thousand, eight hundred ninety-one".