998307263 has 2 divisors, whose sum is σ = 998307264. Its totient is φ = 998307262.

The previous prime is 998307257. The next prime is 998307403. The reversal of 998307263 is 362703899.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 998307263 - 2⁸ = 998307007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998306263) 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, 499153631 + 499153632.

It is an arithmetic number, because the mean of its divisors is an integer number (499153632).

Almost surely, 2^998307263 is an apocalyptic number.

998307263 is a deficient number, since it is larger than the sum of its proper divisors (1).

998307263 is an equidigital number, since it uses as much as digits as its factorization.

998307263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 998307263 is about 31596.0007437650. Note that the first 3 decimals coincide. The cubic root of 998307263 is about 999.4354356604.

Subtracting from 998307263 its sum of digits (47), we obtain a square (998307216 = 31596²).

The spelling of 998307263 in words is "nine hundred ninety-eight million, three hundred seven thousand, two hundred sixty-three".