999996983 has 2 divisors, whose sum is σ = 999996984. Its totient is φ = 999996982.

The previous prime is 999996919. The next prime is 999996989. The reversal of 999996983 is 389699999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999996983 - 2⁶ = 999996919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999996989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998491 + 499998492.

It is an arithmetic number, because the mean of its divisors is an integer number (499998492).

Almost surely, 2^999996983 is an apocalyptic number.

999996983 is a deficient number, since it is larger than the sum of its proper divisors (1).

999996983 is an equidigital number, since it uses as much as digits as its factorization.

999996983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 76527504, while the sum is 71.

The square root of 999996983 is about 31622.7288986893. The cubic root of 999996983 is about 999.9989943323.

The spelling of 999996983 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, nine hundred eighty-three".