998712983 has 2 divisors, whose sum is σ = 998712984. Its totient is φ = 998712982.

The previous prime is 998712959. The next prime is 998712997. The reversal of 998712983 is 389217899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 998712983 - 2²⁴ = 981935767 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998712083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499356491 + 499356492.

It is an arithmetic number, because the mean of its divisors is an integer number (499356492).

Almost surely, 2^998712983 is an apocalyptic number.

998712983 is a deficient number, since it is larger than the sum of its proper divisors (1).

998712983 is an equidigital number, since it uses as much as digits as its factorization.

998712983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 56.

The square root of 998712983 is about 31602.4205243839. The cubic root of 998712983 is about 999.5708101558.

The spelling of 998712983 in words is "nine hundred ninety-eight million, seven hundred twelve thousand, nine hundred eighty-three".