998927259277 has 2 divisors, whose sum is σ = 998927259278. Its totient is φ = 998927259276.

The previous prime is 998927259227. The next prime is 998927259299. The reversal of 998927259277 is 772952729899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 762314087236 + 236613172041 = 873106^2 + 486429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998927259277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998927259217) 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, 499463629638 + 499463629639.

It is an arithmetic number, because the mean of its divisors is an integer number (499463629639).

Almost surely, 2^998927259277 is an apocalyptic number.

It is an amenable number.

998927259277 is a deficient number, since it is larger than the sum of its proper divisors (1).

998927259277 is an equidigital number, since it uses as much as digits as its factorization.

998927259277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720135360, while the sum is 76.

The spelling of 998927259277 in words is "nine hundred ninety-eight billion, nine hundred twenty-seven million, two hundred fifty-nine thousand, two hundred seventy-seven".