9983959 has 2 divisors, whose sum is σ = 9983960. Its totient is φ = 9983958.

The previous prime is 9983929. The next prime is 9983971. The reversal of 9983959 is 9593899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9983959 - 2¹¹ = 9981911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9983929) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4991979 + 4991980.

It is an arithmetic number, because the mean of its divisors is an integer number (4991980).

Almost surely, 2^9983959 is an apocalyptic number.

9983959 is a deficient number, since it is larger than the sum of its proper divisors (1).

9983959 is an equidigital number, since it uses as much as digits as its factorization.

9983959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 52.

The square root of 9983959 is about 3159.7403374328. The cubic root of 9983959 is about 215.3282097292.

The spelling of 9983959 in words is "nine million, nine hundred eighty-three thousand, nine hundred fifty-nine".