20441983 has 2 divisors, whose sum is σ = 20441984. Its totient is φ = 20441982.

The previous prime is 20441947. The next prime is 20441999. The reversal of 20441983 is 38914402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20441983 - 2⁹ = 20441471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20441933) 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, 10220991 + 10220992.

It is an arithmetic number, because the mean of its divisors is an integer number (10220992).

Almost surely, 2^20441983 is an apocalyptic number.

20441983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441983 is an equidigital number, since it uses as much as digits as its factorization.

20441983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 20441983 is about 4521.2811237524. The cubic root of 20441983 is about 273.4267545361.

The spelling of 20441983 in words is "twenty million, four hundred forty-one thousand, nine hundred eighty-three".