798058981 has 2 divisors, whose sum is σ = 798058982. Its totient is φ = 798058980.

The previous prime is 798058951. The next prime is 798059021. The reversal of 798058981 is 189850897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425761956 + 372297025 = 20634^2 + 19295^2 .

It is a cyclic number.

It is not a de Polignac number, because 798058981 - 2⁵ = 798058949 is a prime.

It is a super-2 number, since 2×798058981² = 1273796274309516722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (798058901) 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, 399029490 + 399029491.

It is an arithmetic number, because the mean of its divisors is an integer number (399029491).

Almost surely, 2^798058981 is an apocalyptic number.

It is an amenable number.

798058981 is a deficient number, since it is larger than the sum of its proper divisors (1).

798058981 is an equidigital number, since it uses as much as digits as its factorization.

798058981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 55.

The square root of 798058981 is about 28249.9377167455. The cubic root of 798058981 is about 927.5663743570.

The spelling of 798058981 in words is "seven hundred ninety-eight million, fifty-eight thousand, nine hundred eighty-one".