39982939 has 2 divisors, whose sum is σ = 39982940. Its totient is φ = 39982938.

The previous prime is 39982919. The next prime is 39982949. The reversal of 39982939 is 93928993.

39982939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39982939 - 2⁹ = 39982427 is a prime.

It is a super-2 number, since 2×39982939² = 3197270822155442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (39982919) 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, 19991469 + 19991470.

It is an arithmetic number, because the mean of its divisors is an integer number (19991470).

Almost surely, 2^39982939 is an apocalyptic number.

39982939 is a deficient number, since it is larger than the sum of its proper divisors (1).

39982939 is an equidigital number, since it uses as much as digits as its factorization.

39982939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 944784, while the sum is 52.

The square root of 39982939 is about 6323.2063860039. The cubic root of 39982939 is about 341.9465592547.

It can be divided in two parts, 399 and 82939, that added together give a palindrome (83338).

The spelling of 39982939 in words is "thirty-nine million, nine hundred eighty-two thousand, nine hundred thirty-nine".