998022871 has 2 divisors, whose sum is σ = 998022872. Its totient is φ = 998022870.

The previous prime is 998022853. The next prime is 998022889. The reversal of 998022871 is 178220899.

It is a balanced prime because it is at equal distance from previous prime (998022853) and next prime (998022889).

It is an emirp because it is prime and its reverse (178220899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 998022871 - 2⁹ = 998022359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998022841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499011435 + 499011436.

It is an arithmetic number, because the mean of its divisors is an integer number (499011436).

Almost surely, 2^998022871 is an apocalyptic number.

998022871 is a deficient number, since it is larger than the sum of its proper divisors (1).

998022871 is an equidigital number, since it uses as much as digits as its factorization.

998022871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 998022871 is about 31591.4999802162. The cubic root of 998022871 is about 999.3405221846.

The spelling of 998022871 in words is "nine hundred ninety-eight million, twenty-two thousand, eight hundred seventy-one".