998948143 has 2 divisors, whose sum is σ = 998948144. Its totient is φ = 998948142.

The previous prime is 998948099. The next prime is 998948177. The reversal of 998948143 is 341849899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998948143 - 2²⁵ = 965393711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998948183) 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, 499474071 + 499474072.

It is an arithmetic number, because the mean of its divisors is an integer number (499474072).

Almost surely, 2^998948143 is an apocalyptic number.

998948143 is a deficient number, since it is larger than the sum of its proper divisors (1).

998948143 is an equidigital number, since it uses as much as digits as its factorization.

998948143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 55.

The square root of 998948143 is about 31606.1409064758. The cubic root of 998948143 is about 999.6492579944.

The spelling of 998948143 in words is "nine hundred ninety-eight million, nine hundred forty-eight thousand, one hundred forty-three".