9911983 has 2 divisors, whose sum is σ = 9911984. Its totient is φ = 9911982.

The previous prime is 9911963. The next prime is 9912017. The reversal of 9911983 is 3891199.

9911983 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9911983 - 2⁹ = 9911471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9911953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955991 + 4955992.

It is an arithmetic number, because the mean of its divisors is an integer number (4955992).

Almost surely, 2^9911983 is an apocalyptic number.

9911983 is a deficient number, since it is larger than the sum of its proper divisors (1).

9911983 is an equidigital number, since it uses as much as digits as its factorization.

9911983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 40.

The square root of 9911983 is about 3148.3301923401. The cubic root of 9911983 is about 214.8095158001.

It can be divided in two parts, 991 and 1983, that multiplied together give a triangular number (1965153 = T₁₉₈₂).

The spelling of 9911983 in words is "nine million, nine hundred eleven thousand, nine hundred eighty-three".