8121983 has 2 divisors, whose sum is σ = 8121984. Its totient is φ = 8121982.

The previous prime is 8121973. The next prime is 8121991. The reversal of 8121983 is 3891218.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8121983 - 2⁸ = 8121727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8121923) 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, 4060991 + 4060992.

It is an arithmetic number, because the mean of its divisors is an integer number (4060992).

Almost surely, 2^8121983 is an apocalyptic number.

8121983 is a deficient number, since it is larger than the sum of its proper divisors (1).

8121983 is an equidigital number, since it uses as much as digits as its factorization.

8121983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 32.

The square root of 8121983 is about 2849.9092968023. The cubic root of 8121983 is about 201.0114017113.

The spelling of 8121983 in words is "eight million, one hundred twenty-one thousand, nine hundred eighty-three".