998926354247 has 2 divisors, whose sum is σ = 998926354248. Its totient is φ = 998926354246.

The previous prime is 998926354207. The next prime is 998926354259. The reversal of 998926354247 is 742453629899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998926354247 - 2¹² = 998926350151 is a prime.

It is a super-2 number, since 2×998926354247² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998926354207) 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, 499463177123 + 499463177124.

It is an arithmetic number, because the mean of its divisors is an integer number (499463177124).

Almost surely, 2^998926354247 is an apocalyptic number.

998926354247 is a deficient number, since it is larger than the sum of its proper divisors (1).

998926354247 is an equidigital number, since it uses as much as digits as its factorization.

998926354247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 235146240, while the sum is 68.

The spelling of 998926354247 in words is "nine hundred ninety-eight billion, nine hundred twenty-six million, three hundred fifty-four thousand, two hundred forty-seven".