39983989 has 2 divisors, whose sum is σ = 39983990. Its totient is φ = 39983988.

The previous prime is 39983971. The next prime is 39984019. The reversal of 39983989 is 98938993.

39983989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36505764 + 3478225 = 6042^2 + 1865^2 .

It is a cyclic number.

It is not a de Polignac number, because 39983989 - 2¹³ = 39975797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39983969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19991994 + 19991995.

It is an arithmetic number, because the mean of its divisors is an integer number (19991995).

Almost surely, 2^39983989 is an apocalyptic number.

It is an amenable number.

39983989 is a deficient number, since it is larger than the sum of its proper divisors (1).

39983989 is an equidigital number, since it uses as much as digits as its factorization.

39983989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3779136, while the sum is 58.

The square root of 39983989 is about 6323.2894129559. The cubic root of 39983989 is about 341.9495525376.

The spelling of 39983989 in words is "thirty-nine million, nine hundred eighty-three thousand, nine hundred eighty-nine".