19983983 has 2 divisors, whose sum is σ = 19983984. Its totient is φ = 19983982.

The previous prime is 19983973. The next prime is 19983989. The reversal of 19983983 is 38938991.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19983983 - 2⁸ = 19983727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19983989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991991 + 9991992.

It is an arithmetic number, because the mean of its divisors is an integer number (9991992).

Almost surely, 2^19983983 is an apocalyptic number.

19983983 is a deficient number, since it is larger than the sum of its proper divisors (1).

19983983 is an equidigital number, since it uses as much as digits as its factorization.

19983983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 419904, while the sum is 50.

The square root of 19983983 is about 4470.3448412846. The cubic root of 19983983 is about 271.3692809290.

The spelling of 19983983 in words is "nineteen million, nine hundred eighty-three thousand, nine hundred eighty-three".