998773211 has 2 divisors, whose sum is σ = 998773212. Its totient is φ = 998773210.

The previous prime is 998773177. The next prime is 998773249. The reversal of 998773211 is 112377899.

998773211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998773211 is a prime.

It is a super-2 number, since 2×998773211² = 1995095854022501042, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p_50788595 and since 998773211 and 50788595 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (998773261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499386605 + 499386606.

It is an arithmetic number, because the mean of its divisors is an integer number (499386606).

Almost surely, 2^998773211 is an apocalyptic number.

998773211 is a deficient number, since it is larger than the sum of its proper divisors (1).

998773211 is an equidigital number, since it uses as much as digits as its factorization.

998773211 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 47.

The square root of 998773211 is about 31603.3734117103. The cubic root of 998773211 is about 999.5909029958.

The spelling of 998773211 in words is "nine hundred ninety-eight million, seven hundred seventy-three thousand, two hundred eleven".